Machined* pengun

Miniature cannons are novelties made with materials such as bottles or pens.
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wyz2285
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A cocky guy from my school challenged me to make a "nice looking" stuff that shoots :roll: . He wasn't serious but I decided to make something any way. Today a parting blade I have ordered arrived, so I thought I can finally turn some aluminium. My first thought is a >1000 psi pengun.
I haven't bought the lathe and mill yet so it was made on my drill press (good stuff, with some nice blade and mill bits you can do a lot).
Body made of 10 OD stainless steel, 1mm wall. Nose cone made out of a 12mm OD aluminium rod. Haven't finish it yet, not sure if nylon is a good material for the piston.
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Last edited by wyz2285 on Thu Mar 14, 2013 3:11 pm, edited 1 time in total.
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Brian the brain
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Looks a bit rough on the inside ...or is that tape?
With the outer tube on it looks good though.

How is the barrel ( going to be) sealed to the endplug?
Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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jackssmirkingrevenge
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wyz2285 wrote:not sure if nylon is a good material for the piston.
No reason why it shouldn't work well, delrin has similary properties and I found it great for HPA pistons.

Looking good for a drill press, you're going to love having a lathe ;)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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wyz2285
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Edit, done, only need to finish the firing cap.
Looks a bit rough on the inside ...or is that tape?
That's the idea, for epoxy :wink:
How is the barrel ( going to be) sealed to the endplug?
Epoxy :D
Looking good for a drill press, you're going to love having a lathe
Thanks Jack, I know :D
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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wyz2285
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Finished the end-cap, all done :)
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CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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jackssmirkingrevenge
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Not bad at all :) I hope you put something on the breech end of the barrel to stop it going all cookie-cutter on the piston seal...
hectmarr wrote:You have to make many weapons, because this field is long and short life
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wyz2285
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I hope you put something on the breech end of the barrel to stop it going all cookie-cutter on the piston seal...
Of course, the sealing face it 2mm id and 6mm od :) also has a magnet
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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jackssmirkingrevenge
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What calibre is it?
hectmarr wrote:You have to make many weapons, because this field is long and short life
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wyz2285
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2mm... I was going for 4.5mm pellets but didn´t have the right size tube. Now I do so when I get my lathe and mill a new one will be made :)
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Brian the brain
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It looks awsome!

but...why U no use epoxy?
Just kidding...


What pressure will she run at?

We will see some damage pics right?
Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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wyz2285
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Thanks BTB, right now only use 200psi, it will run on 1000 later :)
Of course, and a video too.
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Brian the brain
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If you could put on the clip-on thingy an actual ballpoint would have...

the cocky guy wouldn't expect it...

take a piece of paper...and the pengun..

"let me explain it to you"
he'll thing you'll draw out the plan...but you fold the paper and set it up as a target..?

:D
Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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wyz2285
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The core of a Bic pen fits perfectly inside and makes a wonderful dart :wink:
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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limmitless
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can we see a video of the assembly?
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Blitz
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Hah, sweet!

Yeah, for smaller diameter things, a decent drill press can make for a ghetto lathe. :) Not as precise, but better than nothing.
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