Thanks - this last anodize job was muuuuch better than the first 10 or so. But now it should be repeatable pretty easily. The GunKote is pretty durable, but more prone to scratches if you carry the light in the pocket with keys or change in my opinion (especially on the corners). I would say a good anodize job is more durable.
Haven’t posted in a while - just thought I’d update the thread with a bit of progress I’ve made.
Here is the latest model of the light:
It’s come a long way. Also a look at the engine:
The light has a (patent pending) engine I developed that allows it to be non-battery crush by using the piston system you can see in the picture above. The force applied to the QTC comes from the body of the light and not the battery. This also allows the light to have a double spring system to keep the battery from rattling.
Here is a pic of the actual internals:
The simplicity allows the light to be pretty durable. Here’s a couple impact tests:
Anyway, just wanted to update the thread since it’s been more than half a year since my last post - and thought you might enjoy something a bit different in design 
Hope you enjoy!
-Fraz
Thanks for the update Fraz. Amazing work.