I missed out on the KR thermal detonator, as I was not collecting at the time. I stumbled on proffiezorn’s thermal detonator build after I started designing and installing chassis, and I though it was really cool. So I started looking for an alternative. I found that roman props make a metal detonator, but the electronics are pretty much just beeping, a little under whelming.
While looking around researching a build, I found 3d files for a complete thermal detonator including the electronics. I believe it is the source for the old master replicas TD prop. And at some point it may have morphed into romans. Maybe he bought the old design, not sure. They are EXTREMELY similar.
I ordered one, figuring if I can’t do it, at least it’s a nice example of a TD
Here is the original design file:
romans chassis:
I got started started designing with the chassis 3d file and completely remade the interior of it to hold all the things needed, proffie board, helper board, speaker, single removable battery, etc.
After I thought I had nailed it, I printed it. Well, turns out there were a few small changes. The mounting lugs were off by about one degree each. The lug recesses were much more shallow. Not sure that it even looked right on the roman in the first place. I ended up printing 10 different revisions until it fit how I liked. 
Here a re few shots of what I have now, you can see some revisions in the bg.
I ruined the proffie board here, so I am waiting on a replacement before beginning wiring.
But its all looking good!
