K40 Drag Chain

Got a K40 laser cutter. I wanted a drag chain for my air and red dot laser.
Well none fit my needs. Also my laser cutter happens to have a door hinge which doesnt allow for other chain setups.

SO i design this. Made it with the ability to easy remove if needed to.
Also didnt want to drill a mount hole so close to the tube. So made a mount that uses a hole always there.

I printed 36-38 chain links.
1 end and mount.

Takes m3 screw.
The rear mount i believe i used 6 or 8mm
For the carriage i used one m3 8mm
For the chain to carriage roller one m3 20mm and 1 m3 nut

update
I had the chain move to close to the laser path in the top upper right. So did a little re design and added a stopper.

*chain link file added. Sorry it was missing