I made this miniature fire piston just for fun because I tend to geek out on random survival and bushcraft things and I like to try and recreate functional versions of them. This one isn’t quite working yet, and I think I may know one reason but I have questions. This was meant to just be a prototype but midway through I decided to try and make it “real”. Thus the lack of attention in the beginning phases.
I’ll start with the basic materials used: walnut “handle”, I THINK poplar dowel but I could be very wrong, and red oak as the base/channel. The seal is waxed hemp wick that I unthreaded and rewrapped to have a thinner working material. Plus a little wood glue to attach the dowel to the handle (which I drilled a hole for the dowel to fit into first). Finished with light sanding and sealed it with wood wax and buffed.
I do intend on making a new base because I do feel like the hole itself is too big. But before I proceed, I have questions as to other reasons it may not work.
Besides the obvious making a smaller hole, which I feel like the seal I wrapped on there is still airtight from the “plop” sound that it makes when I pull it out-
•Should the hole where I keep my tinder material be deeper?
• Is the distance of the channel possibly too short to produce any heat? (Currently about 1.5”)
• Should I be “bottoming out” when I slam down or do I want the shaft to be just shy of the bottom of the channel?
It goes in semi-smooth but not consistently when I do it slowly instead of slamming it but with the slam it goes down in one motion.
Also, the materials I used as tinder were first finely shredded, fibrous paper towel bits, then a small amount of fluffed q-tip. I understand charred cloth is the preferred material, however. Any other suggestions besides charred cloth?
Any tips or advice is appreciated.

Hello, I see some recipes that can be used for tin cloth, is mixin more materials can be better ? I see most of the recipes are 2-3 ingredients and seems like simple is best.

I make a list of materials that can be used on tin cloth,

Tung oil,

boiled linseed oil,

liquid paraffin,

beeswax,

carnauba wax,

turpentine,

lanolin,

Microcrystaline wax,

Paraffin wax

Also vitamin E, castor oil or sweet almond oil could be used too.

Do you guys have any extraordinary recipe for waxed canvas or tin cloth- maybe 2 layer recipes like more oily-liquid first layer and then more waxy-solid waxy layer.