One More Pen Gun

[clemsonguy1125]

After seeing the multitude of pen guns posted in the last few weeks I decided to try building one. Right now all testing is done at 80-100PSI until I get my shock pump, then Ill up the pressure. The video below is a 80 PSI shot with a small nail at a Pepsi can.
[youtube][/youtube]
Chamber-7.14mm Brakeline
Fill-Schrader
Pilot-Schrader
Piston-a piece of a rubber spongebob key chain
Power-Shot a toothpick across the room at 150 PSI

[Gun Freak]

Looks good but I would've liked to see the piston before it went in. Awaiting damage...

[clemsonguy1125]

Its similair to JSRs. just a piece of rubber punched out with a piece of the chamber, ill test it later, if it doesnt work, ill toss it into my bucket of failed minis

[Gun Freak]

Did you get a threaded schrader or is it a normal one just epoxied in?

[clemsonguy1125]

I bought a normal one, put it i my drill and held a file to it until all the rubber had be shaved off, than roughed it up a little so the epoxy would bond to it

[Gun Freak]

Ok cool, how long has the epoxy been drying, and when you gonna shoot it?

1500 posts!!!!!!!!!!!!!!!!

[clemsonguy1125]

Later today, its supposed to cure for 30 minutes but im given it 3 hrs to be safe

Edit-Tested it, Shot a tooth pick Wrapped in tape across the room, Im having issues filling it and disconnection it from the pump without piloting it

[SpudBlaster15]

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[clemsonguy1125]

No problem spud blaster, thanks for the tip, BTW I added a picture of the gun with its grip, and eraser cap

[jackssmirkingrevenge]

i'll test it later, if it doesnt work, ill toss it into my bucket of failed minis

Long is the way, and hard, that out of hell leads up to light

Good job on making it work.

As to removing the fill valve without piloting,this cheap shock pump design (the ones with the purple knob must... resist... temptation... for innuendo! gah! that allows you to independently depress the stem)

[clemsonguy1125]

Thanks, Im planning on ordering one later this week, whats some good amo youve found, little nails work well but I cant find anything else, the barrels 5/32 brass

[jackssmirkingrevenge]

Either nails wrapped in tape, or at higher pressures steel ball bearings of the appropriate diameter.

[clemsonguy1125]

Ok, i guess for now im stuck with nails, once I get the shocky Ill see what it can do at 300 PSI, thats the max I feel safe with this gun
Edit-Adding Video Now
Edit 2-Video is up

[Gun Freak]

I like the background music in the video
Pretty nice, I want to see how it holds up at higher pressure.

[jor2daje]

Looks very nice clemonsguy, how did you end up spacing the barrel from the chamber?

And I completely agree spudblaster, people who make a few well thought out and helpful posts earn a lot more respect in my book.