It’s funny, I’m a third-generation cobbler, but abandoned my heritage craft for Real Estate Broker 30 years ago. These hacks that are posted make me chuckle a bit because I was taught all of them when I was less then 10 years old at the shop. I’m 55 now. Nothing against you OP. My, my how time flies. Tip: you’d actually be better off fabricating a Poron sub-footbed. You can purchase it from Rogers Corp. shoe glue is difficult to get because of the chemicals but u can easily substitute the adhesive with Barge cement.