Here I will be showing you how to create a air-coolable reflector, mind you this and other DIY will never match up to the original, this still will help ALOT.
First you need to start with -
Power Drill (Battery Sucks)
Corner Braces (I used 2'')
Nuts and Bolts (I used #10-24 and 1/2)
Tempered glass if it gets hot enough (Found easily for 20 dollars, might have to order it.)
And "Duct Tape"
First drill the holes.
Take the Corner Braces and Bolts