I think I may have done something very similar to this. I was attempting to make footwear, both to be self sufficient, and because almost all shoes hurt my feet and/or don't accommodate short, stubby feet. Black barn boots are my favorite shoe. Flat inside. I have pictures of my ventures somewhere on Fakebook, but it will take a lot of looking to find it. I have a farm, so ... Please don't be mad. Gotta budget my precious coffee time.
So I had a similar issue and I was trying to make my own shoes out of existing materials on hand. I had a lot of wool laying around. I had an old rubber yoga mat and traced around my foot for the footprint. I cut that out. Then after carding my wool, I wrapped it all the way around the yoga mat foot shape and used a knee nylon stocking on top of that. I wet felted through the stocking with soapy water, adding more and more layers of wool and working the material until it shrunk so much it started to twist the shape of the yoga mat rubber. I took off the stocking and let it dry, then cut a slit on one side of the wool "footprint" shape to make a hole to slide my foot into. This is how I made a basic slipper. I left the rubber in for a bit while I needle felted on some flowers and vines on the toe. Then I shaped the hole where the foot slides in into a rounded shape.
For some kind of sole on the bottom, I have used a variety of materials (I worked in leather and cloth, too. So I did this a lot, trying to perfect my DIY shoe).
1. I cut the upper part off a pair of blown out rubber barn boots (a little slick outside, but works). I glued that on and sewed it on.
2. I did strips of hot glue - it doesn't wear well outside. Rubs off.
3. I used a caulking gun with silicone. This looked ridiculous, but was surprisingly sturdy.
4. I glued on (hot glue again) hemp rope like those huaracha shoes. That was pretty sturdy in dry weather and didn't look too bad.
5. I glued on all manner of flip flop bottoms, yoga mat...whatever was laying around. This works well in dry weather for outside or as an indoor slipper. Or just felt on a lot more wool on the bottom of it's for indoors only. Wool is extremely insulating. Maybe a little too hot sometimes lol.
I'm in Western Washington State, so we have a lot of rain and mud. I have been looking for a long time in info on what the Natives wore here during the rainy months, which is 9 months out of the year, because none of the above options keep your feet dry. My DIY leather moccasins were nice, but it was like wearing socks in the mud. Cooooooold! No bueno. So far I have found that they wore mukluks made from seal skin. Since it is illegal to k I'll seals, that's not an option for me, so I'm back to square one.
I took a short hiatus on the shoe project for a few years bc we moved and expanded the size of our wannabe farm. Now I'm back to it a little bit, but on a little different bent. Maybe it will be of use bc I have learned a few more things.
I now have 2 horses and my draft can't seem to wear metal horse shoes yet but needs shoes, so after pricing those rubber shoes at $124 a pop, I am working on a DIY option. It may be useful I fo bc I researched the DIY "people" shoes how-to's and those made from tires as well, for this project. Same concepts still apply, for my purposes anyways, that it has to protect from water and rocks, and be from salvaged materials if possible. I just have to make it super tough for a 2,000 lb animal with tender feet (facepalm....) . I do have some pics of that, attached here. Also, I've been doing a farm blog entry w pic updates on that, here:.
https://beggsnachin.webstarts.com/blog/post/horse-boots-diy
I got a free tire and cut it with an angle grinder after tracing my draft's feet with a piece of pizza box. In other countries I don't see the steel cable wires that we use here in the U.S. in the tire rubber. Gosh, they make cutting those things look so easy.... It makes sparks everywhere and burned rubber smell and smoke, btw.
I used the tops of barn boots again as a strip to go around the tire edges bc it has little steel cable wires sticking out that could hurt him. I used Shoe Goo, or E6000 glue under the strip and then little half inch (pointy wood screws?) w a little washer to hold the strip into the sides of the tire piece. I dunno what these were called. I dug around in hub's tools until I found a box of something.
**Definitely shoe glue E6000 is the way to go- there's no DIY or cheaper shortcuts on that one that I know of. **
Then I used my Dremel and pre-drilled sewing holes into the top edge less than a half inch apart. I went back and filled in any gaps between the rubber strip and tire tread with the shoe glue. Then I sewed in strips of folded over denim from hub's work pants, lined on the inside with black fleece fabric so as not to rub my horse's legs badly. I sewed on Velcro to fasten it with.
Also, inside is a round layer of that same rubber boot uppers, glued down, and a squishy layer of blue yoga mat. I believe it's memory foam. A 2,000 lb animal will flatten that in no time, and the boot rubber is to protect against those steel cable wires again. Just in case. Bc vet bills suck.
I used micro paracord to sew with using a leather sewing awl needle. The micro paracord had the advantage, in addition to being very tough, added some structure to the denim to make it stand up by itself- easier to slip on the horse hoof, like the Cavallo brand horse boots that I can't afford. When I get the pattern figured out to look all nice, I'll do the ones for my mare in leather. I have cow hides from our beef everywhere, salted and waiting to be processed. Ugh...I keep making work for myself! Not very smart, huh! Lol
Anyways, I hope that helps somebody. Over the years, I have looked at a LOT of videos and websites on DIY shoes, but few keep your feet dry. Unless you go full cobbler and make your own leather actual shoes with soles. There's a person that used to sell moldable shoe sole material (kinda thin, but it works) called "shoeology". I found them originally on Etsy. It's a rubber material you put in the oven to soften it, then use foil and gloves and slap it on your foot and mold it onto your foot. Then after it cools to that shape, you glue and/or sew it on.
But my goal is mostly natural materials or salvaged materials for the purpose of self sufficiency.
Because if you can do it yourself, you are not slave to jacked up prices and manufactured "shortages". Just sayin'. Lol