Category Archives: Project – Embroidery

DANCING AROUND THE CORNER

Having gone on and on about straight repeats as my bony bois march across the top of my piece, we have now come to the first corner.

Thankfully, my count is spot-on and everything is in place.

But why did I start with the strip of skeletons doomed to dance upside down? Because I knew that I would probably make some tiny adjustments to the design as I went along. The viewer’s eye is drawn to the closest point of the work, and the most logical part – that’s always the strip across the bottom, where the motifs are all right-side-up.

It’s unlikely that any small tweaks would be noticeable in the upside-down part at the top. So being too lazy (and waaay too short of thread I can’t replenish) I started there, knowing that I would not be ripping back vast regions to norm those tweaks.

Closer up, in a more normal orientation:

My last post discussed the non-historical use of the same framing element on either side of a mirrored repeat with horizontal directionality. Here’s another feature of this strip that’s not often seen in museum artifacts – the mitered corner.

The majority of corner treatments in surviving historical fragments have butted-up or improvised corners. Carefully plotted mirror images across a diagonal (mitering) are quite hard to find. But I decided to do one anyway. You can spot the diagonal running through the center line of the rightmost internal knot, down through some leafy bits, and into a flower-like shape. I’ve also established the beginning of the 90-degree flipped border, with the upper part of that skeleton plus the first pomegranate underway.

I’ve also rounded the outside corner. In a serendipitous happenstance (I can’t claim I planned it ahead of time), the width and height counts of my marching plumes are equal, so I was able to fudge the corner with one last plume on a long stem.

Side note: At this point I really don’t need to refer to my printed pattern any more, I am mostly working off prior stitching, with occasional glances back at my chart to make sure all is aligned and true.

But that inside edging – it’s different. I’ve introduced another element, playing with the eternity knots and tying them into the plume strip. I did this because the thread count of the warp (the threads that stretch up-down in the detail photo) is denser than the thread count of the weft (those that go across in the detail photo). The closer together the threads are, the more compressed the design will be in that direction. My skeletons marching up/down the sides of my piece will end up looking ever so slightly shorter and chunkier compared to their more lanky brothers that tumble across the top and bottom. BUT I can draw the eye away from that difference by adding the additional knotwork strip.

So it turns out that my design is all about insouciance, breaking historical composition precepts, and visual deception. Still for all of that I think that its look is more closely aligned to the aesthetic of historical blackwork rather than more modern pieces. Just my opinion, feel free to differ.

Class Handout Page

And for having the patience to read down this far, here’s another present. I was going through some older files and came across this class handout page. I’ve taught several workshops using it. The last one I came equipped to do was for a public SCA demo in Rhode Island, although the circumstances and attendees made just sitting and chatting about the stitching a better option. Still, I did update the handout, and it may as well be of use to someone.

The patterns are (more or less) ordered in level of complexity, and are intended to be a self-tutorial in double running stitch. When I teach I provide the page below, a strip of Monk’s cloth and length of standard embroidery floss and needle, plus an inexpensive hand hoop (if I have some to spare). Depending on prior experience, stitching proficiency, confidence level I encourage the participant to select one of the designs from the leftmost two columns, to try out face-to-face in the workshop. Then I encourage everyone to use the rest for self-study at home.

For self study, what I suggest is to just grab a piece of cloth and begin – no need to plan an intense, composed sampler. Pick a point anywhere on your chosen ground, then starting at the spot in the upper left column where you feel comfortable, continue down that column to the simple acorns. Then keep going. The next design in the complexity sequence is the flower spring at the top of the next column. Go down that column to the folded ribbons.

After that, I’d suggest attempting the birds at the bottom left. From there the vertical star flowers, then the knots, four-petal flower meander, and the design immediately above the title. Once you’ve done all that the remaining four intermediate patterns on the page should be well within your grasp (the heart flower all-over, fancy acorns, geometric strip, and oddly sprouting peppermint-stick squash blossoms).

Of course you can be totally random and just use these designs as you will. No need to march in lock step with the protocol, above.

Download this handout in PDF format from my Embroidery Patterns page. It’s the last one listed (click on the thumbnail there to get it, then save it locally).

As ever, if you stitch up something from any of my designs, please feel free to send pix. I always get a big smile out of seeing you having fun with the pattern children. And if you specifically say so and give permission to re-use your photo, I will be happy to post it here and index it under “Gallery”.

MORE ON REPEATS

The repeat on my Dance strip and corner is a bit unusual, and seems to be causing far more problems for stitchers than I anticipated. I designed it so it could be used both as a straight repeat and as a mirrored repeat, but that appears to be the source of the confusion. I’ve talked about the types of repeats and symmetries before, but I will recap briefly.

Here are some basic types of strip-pattern repeats:

  1. A straight repeat is one in which each unit is repeated “as is”. It is not flipped or mirrored, but marches on like the first line of Rs.
  2. A mirror (aka bounce) repeat works like the second line of Rs. There are two center lines, and the design mirrors itself between them.
  3. A meander, the design elements both mirror and flip.
  4. One-directional meander with mirroring but no flipping.
  5. One directional meander with flipping but no mirroring. (No example to hand).
  6. A tumble, the design elements rotate around a center point. (No example to hand).

There are other ways to construct a symmetrical repeat that elaborate on the tumble, introducing further mirroring or flipping, however I will say only the first four methods above are represented in European embroidery styles prior to around 1700, with types #1-#3 being by far the most common, and #4 being rare, but not unknown. And I can’t lay hands on a good example of #5. I haven’t done a comprehensive survey to determine when tumbles (#6) or their more complex derivatives begin to manifest but I can’t say that I recall seeing them on a museum artifact in the time range I pursue.

I also note that patterns can also include more than one type of symmetry, and layered symmetry pieces can become quite complex. There’s more on that in the earlier (and longer) post on repeats I mentioned before.

Now back to the pattern at hand. Here is the basic unit that makes up The Dance.

Notice that the three bony bois cavort in a playground defined by the center of the framing pomegranates. This unit can be combined to make a strip in one of two ways – As a straight repeat (#1), or as a bounce repeat (#2)

I’ve added the blue arrows to help identify the difference. Look at the fellow lolling on the ground. Above, he’s always facing the same direction. Below, he’s facing his mirror image.

To have a Type #2 bounce repeat that uses THE SAME framing device for both bounce points is at best extremely rare. Most use different devices as the two separators, like this little dolphin repeat from my ever-forthcoming book.

Now. What does this mean? Less authenticity, but more versatility. My current project uses the Dance centered around a single project axis. I use mirroring at ONLY the very center of my piece, with runs of straight repeat left and right until they meet up with a corner. Why? Why not? I liked the look:

But if I were working around a piece with a fixed circumference, like on a strip that was to be seamed into cuff, and there was not room for an even number of repeats, I might appreciate the ability to use an odd number of repeat units (along with type #1 symmetry), to better fit the area to be stitched.

I hope this helps.

GALLERY

Finally. After nine long years since the design challenge was issued and I responded with a pattern for the Flying Spaghetti Monster, a finish has been spotted in the wild.

Special thanks to stitcher Zelda Doyle, who had fun with the thing, then posted the result on Facebook and made my day. This photo is hers, of her own work, and reproduced here by permission. The chart for His Noodly Glory is here.

Have you done something fun with one of the pattern children and wish to add to our Gallery? Please let me know.

DETERMINING THREAD COUNTS OF SMALL-GAUGE LINENS

Lately I’ve been seeing discussion of linen, and whether or not it has to be even weave, sold specifically for counted thread work to be suitable for blackwork, cross stitch or other forms of grid-aligned stitchery. I maintain that while that does make things easier, and guarantees a certain precision look, it may not always be needed. Here’s a sample of a not-quite even weave being used for double running stitch.

First thanks to My Stealth Apprentice for the lovely linen remnant I’m using.

While it looks pretty uniform, it’s not. Up close you can see that the thread count is not even in both directions. Also you can see the combo of thin and thick threads that I admit can make stitching a challenge. But you can also see that both circumstances don’t quite matter as much as one might think.

My own counts, estimated by trying to take measurements between two pins placed an inch apart have been off up until now. But totally by accident, I’ve hit on a better way to calculate thread count, and it happened by using a standard US penny as a reference point to show relative scale.

The penny is three quarters of an inch across by specification. By taking a zoom-in photo, then counting the threads it obscures, we get a vertical thread count of about 33 threads in 3/4″ (counting the threads “tall”), and a horizontal count of about 25 threads in 3/4″ (counting the threads “wide”). A bit of math – multiplying both values by 1.33 – and that works out to a thread count of about 43.9 x 33.25 threads per inch. Not even weave in the least. But I can still work a (slightly squashed) rendition of the design on it. It’s distorted, but in a way that would not be apparent if this was to be done entirely as a strip.

However, I AM working this design as a frame around my central motif, complete with corners, so the skeleton dance will appear rotated to fit all four sides. Just as this bit is slightly squashed north-south, when I get to the side 90-degrees from this, the design will be squashed east-west – making my bony bois and pomegranates taller and thinner than they will appear here.

Optimal? Maybe some folks would object. But I am betting that it will still look good.

Oh, and add a penny (or any other coin or flat object with fixed and known dimensions) to your stitching gadget box, along with your phone’s camera. It’s much easier than those pins…

LETTERING COMPLETE – ON TO THE DANCE

I’ve been working away on my admittedly odd fandom sampler, and have finished the motto.

US penny provided for scale.

With more precise counting, the ground cloth is approximately 46-48 threads per inch but isn’t exactly even weave, so the piece is roughly 23 x 24 stitches per inch, with small variations for slubs or skinny threads. But that’s ok.

As for what this rather curious saying in the equally curious and difficult to decipher font says, it’s “Lucus orthai ta.” It’s a saying in an alien language that figures in The Resident Male’s forthcoming book. It translates to “Life’ll kill ya,” and so was fitting to be something ringed round with the skeletons from my Dance pattern page.

Having finished with the plain old cross stitch part, now comes the fun stuff. In an unusual move for me, I’ve graphed out an adaptation of the Dance strip and corner, specific for this piece. I usually don’t bother, but in this case I wanted to be sure that everything was centered. You can see just above the “LUC” I’ve begun a course of the innermost edge of the wide border. It’s mirrored at the center point, over the C. I did this so that my corners would meet up perfectly. Now of course as I go on we’ll see how well I have been ensnared by hubris. But for now, I can hope. Also consult my pattern graph.

Oh. And for the strip across the top, the skeletons will be upside down. You have been warned.

Questions about materials or technique? Comments on the futility of producing a tribute to an as-yet unpublished book? Desire to read the first book in the series? Post your queries here and I’ll try to answer.

AFTERMATH OF A WINDY DAY

Yesterday was windy. Really, really windy. My neighborhood was hit by several amazingly strong downbursts that felled more than several trees. While a big chunk of the two trees in the corner of our lot fell victim, we were lucky in that there were no injuries, nor was there any major damage to any houses or cars. Note that the wind was SO loud when this happened we did not hear the crash. I felt a tremor through the floor, and went to look out of the window, having no clue as to the cause. This is what I saw:

Yes, my neighbor’s empty shed was dented a bit, and the rather iffy fence between our properties took some additional damage, but for such a large pile of downed wood, we came off quite lightly.

Today the tree crew is here. They are removing the debris, and trimming up the larger of the two maples involved in an effort to preserve it. Sadly, the slightly smaller (but still quite large) maple in front of the corner tree is too shredded to save. It’s only got two remaining tufts in its crown – not enough to keep it going. So, compromised as it is, it’s coming down today, in a deliberate rather than wind-wild bit of destruction.

First – how to remove half-a-tree, splayed across two properties, and precariously balanced?

From above.

This aeronaut descended on the boom crane, affixed the lift straps to the main segment, and up they went. Once the limb was off the ground and over a safe spot, he lowered himself down by rope, and the crane lifted the thing up and over my neighbor’s house to dangle in their front yard.

Then the ground crew cut the “fingers” off the suspended “hand” and fed them into the chipper/disposal truck. In the mean time, other guys in the back yard hauled the smaller stuff away.

After this debris was cleared, it was time to prune back the shattered limb of the larger maple, and to remove the smaller one (seen next to the hard-hatted fellow in the photo above).

The result. One sadly halved corner tree, and one stump.

It’s going to be a lot sunnier in our yard from now on. And that corner now cries out for a large shrub of some type – preferably with nice, dense leaves, for privacy. I also suspect that negotiation with the neighbor to the side will lead to the elimination or replacement of the falling fence. There’s also that stump to deal with…

Oh. And to prove that progress indoors is happening, too – here’s the latest on my Lucus Orthai Ta sampler, that will bear my dancing skeletons edging:

I’m just beginning the L, having finished UCU. On the second line TH and part of the A are complete. You can also spy a tiny bit of the innermost band of the edging above the UC. It’s mirrored at the centerpoint – its rightmost edge in the snippet worked so far. More on that as the piece grows, but first I have to complete the letters in cross stitch. Like finishing up a dreaded dish for dinner, before getting dessert.

STAYING BUSY

What have I been doing of late? Well, being lucky, I can work from home, so that’s been taking up most time, especially with major deadlines in the past week. In the time that’s left over, I have to stay busy, and not as a sacrifice to the “cult of productivity.” Mostly because unless my hands are occupied, my thoughts wander to dark places.

I have subdued a reluctant sewing machine and run up some face masks for my family:

Image may contain: one or more people and closeup

I’ve been knitting a pair of socks from a gorgeous ball of yarn I had put away as being “too good for socks.” Well, I deserve nice things, too.

No photo description available.

I’ve done some casual research, and found another rendition of The Old Castle design, dated to 1590-1610. I added it to my round-up of the designs in that family.

And I’ve embarked on a new stitching project. It’s a curious one that has no short explanation behind it, and in a way – it’s the ultimate FanGirl project.

As I’ve mentioned before, The Resident Male (pictured above) writes prime SF/fantasy. He is currently working on the second book in his Blair and Terendurr series. One of the delights of living with an author is that you get to read the output long before it escapes into the wide, wide world. And if you are really lucky, parts are read out loud to you as they are completed.

One of the stories in the forthcoming second book features a rather unusual band of confederates. I can’t go into more detail because I don’t want to post spoilers. But they have a motto in an other-worldly language, “Lucus Orthai Ta,” which translates roughly to “Life’ll kill ya.” I thought it would be fitting as his #1 fan to make a present for my author: an embroidery of this phrase, framed with The Dance border I posted here last week.

I started by combing through my usual haunt for unusual alphabets, Ramzi’s Patternmaker Charts collection of near 100 year old Alexandre, Sajou and other pattern booklets and leporellos, The one I picked is the third one on this page. They don’t get much more baroque or difficult to read than that set of squiggles. Perfect for an alien language.

And so I present the start – working out from the center and in cross stitch for the lettering, on 44 count almost-evenweave linen in “art silk,” it will take me a while to get to my skeleton army in double running stitch. But I will…

As for the story, you are just going to have to wait for him to complete the second book. It will be worth the wait!

BOOKMAKING 110: THE GRAND FINALE

And just like that, the cover is finished and mounted on the target book:

And pix of the thing off the book, Here’s the outside, with everything finished off and sewn flat:

And the inside (with my reverse in all its messy splendor):

To clarify what was done:

  1. As shown above, first I folded in the top and bottom flaps, but I didn’t bother to hem them – I just made sure that the raw edges were covered. There will be no wear and tear on these flaps, so there was no need to protect them further.
  2. Then I folded in the left and right flaps. BUT in this case, because the book covers may slide in and out of the stitched jacket (if the recipient decides to feature the other side as the front cover, or ever replaces the book itself) – I did hem them for stability.
  3. The next step was to stitch the placeholder ribbon to the underside of the top flap. I left it extra long, so that it could be fished out and used, no matter which of the two sides of the embroidered jacket were deemed to be the official front.
  4. After all four flaps were prepped I stitched the edges of the left and right flaps to the top and bottom edges of the book cover’s front.

Now that last step can be done in several ways. The easiest is a simple whip stitch or invisible hem. But I never take the easy way out. Instead, I went back and extended the green double running line that defines the top and bottom edge of my stitched area out along my fold. I couldn’t put the thing back into the frame, so I did it in hand. Then having two green lines established, I used the same green embroidery floss to work them together, following (more or less) the logic that people who make biscornu use to seam together the two squares that form their curious little pincushions. A good tutorial for that is here.

The image above shows my wobbly last minute double running stitches, and how I united them front and back to make a heavier edge seam.

Finally, having done all of the finishing work, I slid the book’s own covers into the flaps of my stitched jacket. Here you see them in place, with the handy help of a large corkscrew, since I was running out of hands to hold everything in place.

And so, taaa daah! A small book with a nifty cover. A stitched project that doesn’t take up wall space, that can be adapted to any size book you have on hand. Embellish a devotional book that means a lot to you; or at the other end of the spectrum, disguise a racy novel for discrete subway reading. Use any pattern that tickles your fancy. Or several if that’s what speaks to you. But whatever you do – enjoy, be creative, and feel the pride in coming up with something that’s specifically and personally meaningful to you.

This concludes my stitched book jacket tutorial. Please post questions if you have them – I’ll do my best to answer.

BOOKMAKING 109: STITCHING FINISHED, ON TO ASSEMBLY STEP ONE

I’ve finished all of the stitching on the book cover project, now on to turning the flat piece of cloth into the finished item.

Although I am a teensy bit disappointed that my centering efforts on the leafy side did not pan out, I think you can see that my guess was correct. Given the eccentric nature of this slow-descent repeat, it’s not obvious at all.

An interesting thing happened – density of color. The yellow used on the front and the back are the same – same color number, even the same skein. But the diagonal diamond voided fill used behind the leaves is more dense than the lattice weave used with the swirly flowers. And the swirly flowers, having nice dense centers and connector leaves show the red as being more intense, too. The colors present differently depending on the stitching designs chosen. Close diagonals will appear visually more dense and darker than stitches done “with the weave” – horizontally or vertically.

While density differences do manifest in monochrome, they mostly present as grey scale from a distance, or in some blackwork substyles – something akin to the cross-hatched lines that are used to indicate depth and shadow. But in polychrome it works a bit differently. Individual colors – the same colors in fact – will pop or recede, or even intensify, depending on the closeness and orientation of the line segments on which they are used.

Making up the Book Cover

Well, for me at least the fun part is over. Now for the less interesting but no less exacting half of the project – turning this flat piece of cloth into a book jacket.

As you recall, we have the flaps all neatly defined by basted lines. These I will just turn over, not bothering to finish off the raw edges. They will be well concealed once the thing is sewn together, plus the added bulk of a turned or rolled hem would distort the lie of the stitched part of the cover.

First I flipped the thing over, with the “good side” down, so I could fold my flaps to the back. I set the creases along the stitching lines and the basted guide lines, setting them with my iron. It’s easier to do if you finger-press first to get the precise fold line, then follow the finger-pressed creases up with a warm iron. (Ignore the blue ironing board cover stained with the ghosts of projects long past).

Finger pressing prior to ironing – you can see the stitched green perimeter along the very edge of the fold.

I started by setting the folds on the top and bottom edge, and then the left and right sides.

Then I trimmed off some of the excess fabric at the top and bottom. I didn’t bother trimming the left and right because there really wasn’t much to trim.

The next step was to fold everything in, and remove some of the bulk in the corners – note that I did not trim it all.

At this point with lots of nice, crisp creases in place, and no further need for the markings, I teased out all remaining bits of lavender basting thread.

On to the corners, to make them a bit sharp. There are other ways to do this, but origami-style “squash folding” to make a mitered corner is the simplest. I folded the corners in, ironed in the creases and pinned them for hand-tacking. And while I had the pin ball out (the needle-felted pin-puff is a treasured gift, made by Younger Spawn), I pinned the flaps to the body, although I will NOT be stitching them down..

And the last bit of prep was the stash-dive for a bit of red ribbon. That I will sew to the inside of the cover. It’s just long enough so it can be teased out to either the top or bottom, and will serve as an effective placemarker regardless of whether my recipient chooses the flower or the leafy side as the front cover.

Now off to do all of the tacking. The next post will cover sewing the end flaps in, to make the pockets into which the book covers will be slid. Before writing that bit up I want to experiment a bit, because I’d like those seams to be neat, and if possible – visible, and in green. We’ll see if that works out or if I punt and just stitch in the plain white sewing thread I am using for tacking and affixing the ribbon.

DON'T PANIC – AGAIN

A while back I stitched up this piece, both as a tribute to Hitchhiker’s Guide, and as a bit of inspiration for my office. I’m a proposal specialist – managing short deadlines and general panic are my stock in trade.

When I posted this on Facebook last Friday, I got several requests for the chart. So, tweaking memory dormant since 2009, I drafted one up.

I make this chart freely available for YOUR OWN PERSONAL, NON-COMMERCIAL USE.  Consider it as “good-deed-ware.”  It’s tough out there right now.  Pay this gift forward by helping out someone else in need; phoning or getting in touch with a family member, friend or neighbor who could use a cheerful contact; volunteering time or effort; or if you can afford it – donating to one of the many local relief charities or food banks that are helping those displaced from work right now.

CLICK HERE TO DOWNLOAD THE DON’T PANIC CHARTS AND INSTRUCTIONS – THEN SAVE THE PDF THAT POPS UP

Eventually I will add this to the Embroidery Patterns page tabbed above. But for the time being – be safe, stay well, and care for those whom you love.

 

BOOKMAKING 108: RIPPING OUT AND RECOVERY

The last post of mea culpa probably left people wondering how it was going to all turn out. Here’s the result:

I only needed to tease out one straight line of stitching – the former rightmost edge of the previous side. Now the two borders join to make one larger mirrored strip that takes up the spine area and wraps around to be visible on the front and back. Not as I originally planned, but acceptable.

And I have been able to keep going on the second side, working my double leaves in red, and the diamond fill ground in yellow. Again, not as originally planned – the repeats will not be neatly centered left/right, but because this particular fill is eccentric, I bet it won’t be noticed by anyone who isn’t aware of the problem in the first place. (Mom, avert your eyes).

Now on to today’s submitted question:

How do you rip back?

With great care.

It’s very easy to inadvertently snip the ground cloth, and that’s a tragedy when it happens. But I have some tools that help.

The first thing is a pair of small embroidery scissors with a blunted tip. These are the latest addition to my ever growing Scissors Stable, and a recent holiday gift from The Resident Male. Note that one leg has a bump on it at the tip. That’s the side that is slid under the errant stitch being removed, to make the first snip. Although these are sharp all the way to the tip, the bump helps prevent accidentally scooping up and nipping the ground cloth threads.

To rip back taking all due care, I snip a couple of stitches on the FRONT of the work. Then I employ a laying tool and a pair of fine point tweezers for thread removal. The laying tool was also a gift from The Resident Male, and replaces a procession of thick yarn needles I used before I had it. My tool is about 3 inches long (about 7.6 cm).

Best Laying Tool

My pair of tweezers is one intended for use in an electronics lab. I found it in the parking lot of a former job, probably dropped by someone testing robots in the back lot. I tried to return it, flogging it around to likely techfolk for several months, but had no takers. Seeing it was to remain an orphan, I adopted it into a new fiber-filled life. I love it. It’s wicked pointy, and even with the dented end (probably damaged when it fell off the test cart onto pavement), does a great job of removing tiny thread bits.

Having snipped the threads on the front, I use the laying tool’s point (augmented by the tweezers) to tease out the stitches in the reverse order they were worked, doing it from the back. Luckily this style of work has a logical order and it’s usually pretty easy to figure that out. But in some cases it gets harder. When that happens, it’s another judicious snip on the front, followed by use of the tweezers from behind to remove the thread ends for discard. (While I can sometimes recover/reuse a live thread after I catch a mistake of a few stitches, in general if the run is long, or I’ve ended off the strand there’s little point in trying to save it and stitch with the now-used and damaged/fuzzy piece of thread.)

If the color is in the least bit friable and liable to crock on the ground fabric, I cut more and pull less – making sure to remove all threads from the back rather than pull them forward to the front. This minimizes color/fuzz shed on the front, public side of the work.

If any snipping needs to be done on the back, flat and parallel to the ground, I pull out another resident of my Scissors Stable – a pair of snips I bought at the SCA Birka marketplace event, two years ago. They look like this:

These were a great buy. Inexpensive, super-sharp (I think the snipping action helps keep them sharp), and because they are not held like finger-hole scissors, very easy to manipulate to snip close and flat to a surface.

And what to do if there are fuzzy bits or surface discolorations that remain on the front? Here’s my last resort. I wrote about it before:

Yes. Silly Putty. I have found that a couple of gentle blots will pick up fuzz and shed bits of color. The trick is NOT to scrub, just support the cloth from the back (I use the top of the stuff’s eggshell container), and press the putty gently onto the affected area – then remove it vertically and quickly. Make sure not to let it dwell on the surface.

I will caution that there is risk doing this. I have no way of knowing if anything exuded by Silly Putty will be a life-limiting factor for the threads or ground in 50 years – if discoloration or other complications might ensue. But the Materials Safety Data Sheet for it doesn’t turn up anything particularly evil, and I am willing to risk it. You will have to make that decision for yourself on your own. Having warned you I take no responsibility if it ends up doing so.