Print the sizing insert and push it to the back of your shoe to see wheter or not it lines up and rescale acordingly. My TPU insole was for 42eu or 8.5us shoes as a starting basis. I suggest printing this in PLA as it is quick and easy and then just going for a close fit, as the final insole will be in TPU and therefor flex perfectly into the shoe.
After printing use double sided tape or glue to keep the insole in its place.
Print instructions
Print in TPU or TPE
use 2 or 3 perimiters, so it can perfectly flex into place
use 0.12 layerheight for comfort (the finer you print the nicer it will feel)
use 20% to 50% infill, acording to how much give you like in your shoes
Mathijs Van Wijk
