Here's my latest mini spudgun built as a miniature replica of the cobra venom by Moonbogg.

Basic specs:
Barrel: 12.5 cm long, 3.5mm bore
Chamber: 2.5 cm long, 9mm i.d (it is longer, chamber plugs occupy a large amount of space)
Over/under construction with chamber brace and fore barrel support.
Chamber plug is threaded and has a built in check valve
2 spark gaps
Propane, MAPP or oxygen-hydrogen fuel (metered)

Spudfiles thread:

Me making miniature replicas on request:

Inspiration, the Cobra Venom by Moonbogg:

Will I do an instructable? Depends. If someone suggests a good cannon for me to replicate (on SF) I might.. make one. Though these are very intricate, requiring a lot of understanding, planning and determination..

Also, my camera crapped itself so photos are taken with phone.
where did you get the aluminum?
cood you make one to replicate an mp40 it would be awesome

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