Archery

You could also find thicker canvas to cover your fingertips.

I practice mostly lighter pull compound, but I also shoot recurve. I no longer use finger protection or forearm protection, but that has more to do with the fact that I don't practice enough for it to matter. One issue that I had with finger protection is that it made my release inconsistent.

I say all of that above to caution when trying a new material like denim or canvas, because it might drag on the string. But I still recommend canvas over denim for wear resistance.

Good luck, amd let us know how it goes!

Try looking up "thumb rings" or "finger ring". Not to sure what they are called. But it looks like any other ring, except it has a hook on it to "grab" the string.

It's like using a mechanical release, but you use your thumb or finger to hold it in place.

Or just a mechanical release.

Not really an archer, but I do mess around with scrap denim a good bit.

You'll need layers, and you'll need something to stiffen any parts that need to be. I use epoxy on a few layers of denim for some things, but that's essentially another form of plastic. I've tried wax, and it does okay for some things, but it would likely be too thick by the time the stiff parts are as stiff as you want.

As an example, I made a knife sheath out of denim. Sheathes need a good bit of stiffness, and wear resistance as well as cut resistance. I took a single play of denim, got it saturated with epoxy. Sandwiched it between two layers of untreated with a very light coat of epoxy to hold the stiffened piece to the inside face.

The "front" face was two layers, with the outside being plain, and the inner only partially expoxied.

So, you can make some really durable stuff with denim. I'm just not sure how long each finger guard is going to last against the division friction of a bow string. Three or four layers wilk get the job done, but you may end up replacing them every hundred shots or so

I'll go contrary to most answers here. I'd say if you take some stiffer demien (like from a back pocket) it could work. People are talking about "wear" but if used correctly I don't see that happening. You're not rubbing the demien along the string. More expensive tabs allow for replacement of the leather. If you take one of those, creating a demien tab should be no problem. Also given that the demien is easier deformed than leather, it should give you a nicer feel for the string.