Nicely done!
I've been thinking of using kydex for my battery enclosures for a while now! Easy, cheap materials, somewhat self healing and will take a beating to protect batteries (also slides well if scraped). I've not built a vacuum table yet, but do have the nicer press to form with.
Couple questions - what thickness are you using and can you share your forming setup? Also, in the first pic you have a large toggle switch - how was that wired? I wanted to do the same for my on/off switch, but don't know if it will handle the higher voltages and Amps. Planning on the inline XT-90 w/ anti spark instead, but curious how it worked. Also see it's not on the second version, so did it have issues or not work out?
What ESC is that? CC Mamba or XL2 perhaps?
Thanks. If too off topic maybe a separate thread on those questions? don't mean to hijack your mount thread. (*edit* - i did find your build thread. Impressive progression and skills to do it all yourself. Nice work. Curious on your vacuum setup still.)