I wanted to contribute to this project to try and have it make me a spare key for my electric bike. So I haven't found anything about if this can handle double sided keys, and how you were running the makefile.

I found this ilco key blank reference pdf but I haven't found a bitting depth specs chart to go with it. I hope to add the ones from this pdf I need (in a new branch) and then others can maybe use this pdf as well