Alchemist: The smoothest printed pump action blaster!
Now avaliable with metric hardware
The author remixed this model.
I've redisined the original Sillybuts's Alchemist to use metric hardware:
1. Regular PVC pipe OD=40mm ID=34mm
2. Aluminium pipe OD=16mm ID=13mm for barrel
3. Aluminium bars 15х2mm for rails and tensioners
Drawings for this hardware are in screenshot section
Also used other Sillybutts's design for printable stock and plunger.
PS:All metric redisinged files you can download from my files.
For the rest of the files use original Sillybuts's files
PS2: Holes for Flat Head Screw, 4-40 Thread Size, 3/8" length just Drill for DIN7991 M3x10
PS3: Standart metric BOM- see on screenshot