I have repeatedly sung the praises of release treated peel ply in rolls. This stuff:

https://www.aircraftspruce.com/catalog/ ... eelply.php

Peel ply in rolls is the best thing for small epoxy repairs since G/flex. I bought a roll of 6” wide, which was wonderful for larger areas. Or wonderful for larger, flat-ish areas, before appreciating that on complex curves narrower strips of peel ply produce fewer folds and crinkles at the edges. So I bought a 4” wide roll, used half of it, still occasionally crinkles on narrower curves, and bought a 3” wide roll, thinking that 3” wide variation would suffice cover my narrow seam or crack repair needs for years to come.

Until today, when I needed several 3 foot lengths more like 1 ½” inches wide. All of the 50 yard long rolls of peel ply have plenty left, I really didn’t want to buy yet another roll just to go narrower.

In a moment of astounding genius I (finally) realized I could cut off a couple 3’ long pieces off that rolled peel ply and simply scissor them up the center. The Dacron fabric peel ply cuts easily and cleanly, without edge strays or frays, and presto, four each 3’ long x 1 ½” wide strips of release treated peel ply, perfect for laying atop narrow, curvy repairs. Genius!

Even so, to best accommodate the complex curves I needed to lay a long piece -------- and shorter pieces / and \. Still, easy peezy quick snip-snip scissor work.

It only took me 5 (10?) years to realize that I could easily cut the rolled Dacron to whatever width would work best. I could have just bought a 6” roll and cut the length needed to the desired width. I’m not the sharpest tack in the box, but I’ll get there eventually.

For a lot of fabric and epoxy repair work a 6” wide roll of rolled release treated Dacron peel ply, 50 yards long, if needed cut to various widths, would be a godsend.

lol i bet it was like getting a free 1.5" tape delivered, then landing on your table.
but i'll bet if this were masking tape you'd have thought of it on day 1.
something about the peelply or its application did not welcome the thought of cutting it lengthwise lol.
and if you buy a smaller one once, it becomes twice as hard not to do it again,
because the second time around you refer to your first time around as a guide as to what to do lol.

Regarding various peel ply and release films, the silk-weight blue release film type peel ply leaves a much fainter weave, and wraps around curves a bit better, but it doesn’t cut into long strips worth a damn.

The thicker white release treated peel ply nylon fabric, the stuff that looks similar to S-glass, leaves more weave impression, and like S-glass can get a bit ragged edged when cut. The ragged edges are not an issue with a large piece of peel ply with ample overlap, but skinnier linear pieces become trickier.

The Dacron peel ply in rolls cuts perfectly and cleanly. I should have realized that from the simplicity of snip-snip scissoring off various lengths. Yup, it cuts up the center just as cleanly and easily.

The “green pull” peel ply, nylon fabric that is not release treated, may have some beneficial application, but I have yet to discover one. Maybe if you wanted to topcoat while the epoxy was still green for better chemical adhesion, but you could pull release treated peel ply with the epoxy still green.

Remove that non-release treated peel ply too soon and it will lift pointy stalactites of epoxy, or worse pull up/move the epoxied fabric. Wait too long to remove it and it becomes a two-handed pull with all you’ve got to get off, or worse is stuck forever. Test lifting, still too green. . . .still too green. . . .ok, now! It took two of us hauling at a 1 x 2 foot piece of green pull peel ply to remove it from a canoe.

Depending on the epoxy, the mix and ambient temperature/humidity cure time the non-release treated stuff is too much of a guessing game for me. Especially when release treated peel ply comes off smoothly and easily in a few hours, or the next morning, or even days later.

Sometimes the simplest solution is elusive.