How would you be able to build a 1/4 bb gun? I was able to figure out how to build one for torps but not 1/4 bearings
JKN, how to build a 1/4" bb cannon depends on what sort of cannon you want. There are: MJV single-shot cannons MJV reloading cannons MJV rotating cannons Indiana-style non-rotating cannons Indiana-style rotating cannons Indiana-style piston breech cannons Indiana-style sliding-breech cannons Canister-style cannons Canister-style piston breech cannons Canister-style sliding-breech cannons canister-style negative-pressure cannons Stomper cannons (canister-style sliding-magazine) Trombone guns O-ring guns jam-elbow guns AK47 torpedo cannons HE (high-efficiency) torpedo cannons Grease guns PVC accumulators copper accumulators aluminum accumulators MAT tank accumulators o-ring seals shoe-goo seals superglue seals solder seals threadlock seals PVC valves MJV valves ABS valves brass valves aluminum valves PVC magazines lexan magazines aluminum magazines sewer pipe magazines wooden magazines single guns double guns triple guns quadruple guns hextuple (six-barrel) guns low-profile guns compact guns depressing guns submarine guns top-loading guns compressed air guns CO2 guns railguns wave motion guns the list goes on and on... Your choices affect everything from operating principles to manufacturing techniques to ease of maintenance, and everything in between. The simplest cannon is an MJV cannon. You put a MAT-2 accumulator on a MJV-2 valve, with an MPA-3 actuator to fire it. Install a 1/8NPT to compression ring fitting, then stuff in a 3/8" brake line barrel and tighten everything down. Materials cost about $25. Adding reloading is easy: replace the 1/8NPT to compression ring fitting with a 1/8NPT to compression ring T fitting, and modify it to use a sliding piston breech. Material cost about $26 plus a little drill press + lathe work. More complex than that? buy the weapons manual from Strike Models, and build the cannon detailed in those plans. Or wait until Strike Models starts producing their own Big Gun cannons, which I hope will be early this year.
I would add that as far as engineering plastics go, I really like noryl EN265 (I believe the chemical is Polyphenylene Oxide) for instances where I would normally use delrin/acetal but want to be able to use an adhesive on it... and have it stick.
Kotori, I just caught the last one on you list. Have you seen the trailer for the live action Yamato movie?
Looks like a very faithful adaptation. The website goes live in about 16 hours. http://www.yamato-movie.net/
