I've tried repalming gloves and it is extremely hard and frustrating to do properly. I was able to cut the old palms out and stitch pre-mades palms back on, but while the palms were functional, they didn't look or feel like the original palms. The full repalming process that CPR and Hockey Menders use requires tons of time and precision.
1. Measuring, hand-cutting, and sewing the palms
2. Unstitching and detaching the cuffs from the base of the gloves
3. Unstitching and removing the binding and all old palm materials and threads from inside the binding
4. Sewing the new palm on with proper tension throughout the entire glove
5. Using a binding attachment to install brand new binding on the thumb and pinky
6. Stitching the cuff back onto the glove with proper tension and alignment
That doesn't even include gussets or any cuff mods. In addition, the machines required to do this work cost thousands of dollars. My basic machine (around $1,300) wasn't able to do it. I was able to borrow my previous neighbor's vintage leatherwork machine to practice. I plan to buy my own eventually after moving to my new shop, but even then I'd need to practice for a long time before offering repalming as a service.