MAG-LITE flashlights battery magazine conversion

My MAG-LITE flashlight that uses 6 C type batteries was badly corroded due to battery electrolyte leaked out once the batteries inside fully used up but left very long. The corroded batteries were stuck inside the pipe. I had to remove them with brute force since all suggestion found on YouTube didn't work. It means I had to cut of the tail cap. After thorough clean up, I replaced the bulb with a LED and wanted to use AA type instead of C type batteries. Hence, I have designed a C-to-AA conversion battery magazine (you need to print 6 of them) and the tail cap.

The 6EA C-to-AA conversion battery magazines can be fit in inside the aluminium pipe. Then you may put AA batteries in to the cyliner instead of C type batteries.

I had to make a spring type electrical contact on the tail cap by winding a length of steel wire to a right diameter (less than the diameter of AA battery to fit in the tail cap as designed), then heated to red-glow with a gas torch then quench in a water to wor