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My new marker gun will be serviceable

Discuss miniature cannons built from things such as pill bottles and pen caps.
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My new marker gun will be serviceable

Unread postAuthor: Sticky_Tape » Wed Jul 09, 2008 9:30 am

Well after so many repairs being made to pistons in my minis having to grind the gun open with a dremel
(kinda pissin me off) and marker guns generally not working I have decided I am going to make a seviceable marker gun.
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100-0009_IMG.JPG
Piston is made out of a small plastic thread spool with the thread on it filled with epoxy wrapped with electrical tape to fit type m copper pipe the pipe used it the gun, and a sealing face super glued to the top of the piston.
100-0008_IMG.JPG
Looking inside of the marker gun 5mm barrel is nice and strait.
100-0007_IMG.JPG
one of the best epoxt castings I have done is holding the barrel in it is really clear the cardboard I used that I made the epoxy plug with had smthing writen on it you can clearly read it through the epoxy.
100-0006_IMG.JPG
Shrader on threaded side of screw adapter.
100-0005_IMG.JPG
fill side of shrader on hex side of threaded adapter. The socket where you would normally insert the copper pipe I cut off to make the gun shorter.
100-0004_IMG.JPG
The threaded plug and body of marker gun still waiting to get the 1/2'' female adapter.
100-0028_IMG.JPG
Edit forgot the pic of the barrel the widder part on the left of the barrel is 6mm aluminum this is used so the .5mm wall thickness of the 5mm aluminum won't slice into the sealling face
You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: Sticky_Tape » Wed Jul 09, 2008 2:32 pm

Bump
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: jackssmirkingrevenge » Wed Jul 09, 2008 5:46 pm

Looking good :) one of the pitfalls of epoxy unfortunately.
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Unread postAuthor: pat123 » Wed Jul 09, 2008 6:01 pm

I like it, you should house it in an actual marker
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Unread postAuthor: Sticky_Tape » Thu Jul 10, 2008 9:42 am

I found the fitting I wanted 1/2'' female adapter.
unfortunatly the gun is a bit longer than the largest marker I could find.
And JSR epoxy is the best thing for strength but when the piston breaks the whole gun is useless if you can't fix it That is the reason why I made the gun serviceable that was probably aparent.
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100-0002_IMG.JPG
The marker is about 143mm long and the marker gun is about 160mm long olny a meer 17mm longer still pretty good.
100-0001_IMG.JPG
The whole gun all 160mm of it!
My pump isn't finished yet so no test until then.
You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: pat123 » Thu Jul 10, 2008 12:17 pm

just let the schrader stick out of the back and the tip of the barrel out of the front.
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Unread postAuthor: Sticky_Tape » Thu Jul 10, 2008 12:22 pm

Did you think about somthing for the 1/2 female adapter? That is widder than the marker.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: starman » Thu Jul 10, 2008 1:11 pm

Pretty nifty little unit there. I assume you'll fire by piloting through the schrader. What did you have in mind to trigger it?
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Unread postAuthor: Sticky_Tape » Thu Jul 10, 2008 5:04 pm

Just a small mettal rod to pilot.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: Sticky_Tape » Fri Jul 11, 2008 7:42 am

Somthing annoying happened last night I couldn't find the marker gun I guess that was a test of it's consealibility couldn't find it if I tried This morning I got up and I found it 2 minutes after I got up so it's all good now
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: Gippeto » Sun Jul 20, 2008 5:56 pm

Looks like a fun little project. Good job on it too! :D

We await the obligatory damage pics.
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Unread postAuthor: Sticky_Tape » Mon Jul 21, 2008 9:44 am

I have a great video that I wish I could put on this computer but it is retarded so I can't I will get on those dammage pics.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: paaiyan » Mon Jul 21, 2008 9:53 am

What kind of pressures will you be using?
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Unread postAuthor: Sticky_Tape » Mon Jul 21, 2008 10:03 am

I don't have a guage but it is definantly a minimum of 300psi
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: paaiyan » Mon Jul 21, 2008 10:13 am

Sweet, can't wait to see it in action.
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