Modified original files from https://www.thingiverse.com/thing:4942004 to remove need for supports and to make it more user friendly.
M4 bolts needed: 30mm x 2, 12mm or longer x1 for holder/chuck, 16mm for trigger and 4 nuts
Modifications:
Main handle split into two parts. The handle and the can holder. Parts are held together by two M4 30mm bolts and nuts. If the can holding part breaks, don’t throw away your entire print, just reprint the small can holding part. Use whatever infill you want.
Added an optional nut key/chuck to easily and quickly loosen and change the spray can.
I used M4 bolt and nut for the center trigger pivot and it worked well as it without modifying the original hole so you can use M4 or M5 there.
The key/chuck may need a brim if it is not adhering well to the bed when printing. Aqua Net hairspray does wonders for adhesion.
STL and 3MF files uploaded along with Fusion360 Step file for easy modifications.
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