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jackssmirkingrevenge
PostPosted: 07/21/2010 10:47 AM    Post subject: pengun deluxe Reply with quote

aspiring machinist
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Joined: 15 Mar 2007
Posts: 18051
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My original pen gun was built in a hurry for a spudfiles contest and wasn't very refined, I figured three years on it was time I made one that could actually pass for a pen Smile

Since the focus is on aesthetics, dimensions are rather limited - for example the 3mm barrel is only 70mm long - but the 8mm I/D chamber tube gives a high C:B ratio. Internally it's similar to my pengun v2 with a solid rubber piston cut with a sharpened tube from 1/4" sheet. I also added a small neodymium magnet to the breech in order to stop projectiles from rolling out.

Performance isn't spectacular but nothing to scoff at either, here it is in action at 400 psi against a energy drink can full of water, using a 3mm steel BB - punched straight through.


Link


All that's left is to add a rod to the cap so it can be used as a trigger, meaning once it's loaded and pumped it can be carried alone and used without ancillary items. I would also like to find a suitable cap to disguise the schrader, maybe a turned down tyre dust cap.

edit: added the cap as a firing mechanism Smile


Link


How it works:



Some photos:


Last edited by jackssmirkingrevenge on 02/26/2011 2:41 AM; edited 2 times in total
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Gun Freak
PostPosted: 07/21/2010 10:49 AM    Post subject: Reply with quote

The Anti Hybrid
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Joined: 25 Jan 2010
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Nice, you need a front to disguise the barrel, but good performance. Smile
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jackssmirkingrevenge
PostPosted: 07/21/2010 10:50 AM    Post subject: Reply with quote

aspiring machinist
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Once they can see the barrel it's already too late ;P
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Mr.Sandman
PostPosted: 07/21/2010 10:53 AM    Post subject: Reply with quote

Bring me your dreams
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Dear lord jack, you just love 1up'ing people Laughing I need to find a nice brass colored cap for my pengun. I do believe I have started the shiny pengun fad. Great work as always, hope to see another slowmo vid soon.
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jackssmirkingrevenge
PostPosted: 07/21/2010 10:55 AM    Post subject: Reply with quote

aspiring machinist
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Mr.Sandman wrote:
Dear lord jack, you just love 1up'ing people Laughing


Lol I know that's what it looks like, but actually this has been in the pipeline for a few weeks now, I was just waiting for the pen I ordered to arrive so I could cannibalise it for parts Wink
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clemsonguy1125
PostPosted: 07/21/2010 10:55 AM    Post subject: Reply with quote

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Looks great, whats the piston, and is it servicable, im hesitant to make a non servicable mini after the fail of my last piston.
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jackssmirkingrevenge
PostPosted: 07/21/2010 10:56 AM    Post subject: Reply with quote

aspiring machinist
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clemsonguy1125 wrote:
Looks great, whats the piston, and is it servicable, im hesitant to make a non servicable mini after the fail of my last piston.


*cough*

jackssmirkingrevenge wrote:
Internally it's similar to my pengun v2 with a solid rubber piston cut with a sharpened tube from 1/4" sheet.


That sort of piston should last the life of the launcher as long as it's well supported.
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Mr.Sandman
PostPosted: 07/21/2010 11:01 AM    Post subject: Reply with quote

Bring me your dreams
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jackssmirkingrevenge wrote:
Mr.Sandman wrote:
Dear lord jack, you just love 1up'ing people Laughing


Lol I know that's what it looks like, but actually this has been in the pipeline for a few weeks now, I was just waiting for the pen I ordered to arrive so I could cannibalise it for parts Wink
I see how it is, the whole "I thought of this before you routine" Rolling Eyes Kidding of course, what pen was it that was used for this build, the cap would look perfect spray painted gold colored and put on my pengun.
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clemsonguy1125
PostPosted: 07/21/2010 11:03 AM    Post subject: Reply with quote

Major General
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Thanks, my bad, I read through that a little to quickly
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jackssmirkingrevenge
PostPosted: 07/21/2010 11:06 AM    Post subject: Reply with quote

aspiring machinist
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Mr.Sandman wrote:
what pen was it that was used for this build, the cap would look perfect spray painted gold colored and put on my pengun.


This one.

Originally I wanted to fit the coax in the pen body, but I was a little too heavy handed while hacking it up Rolling Eyes

Maybe I should find a clicky-top, incorporated trigger...
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jakethebeast
PostPosted: 07/21/2010 11:34 AM    Post subject: Reply with quote

Lieutenant Colonel
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hey thats beautifull, looks much better than the original one Smile
damn i need to make one of these penguns
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jackssmirkingrevenge
PostPosted: 07/21/2010 12:20 PM    Post subject: Reply with quote

aspiring machinist
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Yep, this one makes the original look pretty shabby. Already working on a new one Very Happy
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clemsonguy1125
PostPosted: 07/21/2010 16:01 PM    Post subject: Reply with quote

Major General
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In the second picture is that solid epoxy you used to hold the barrel in the center
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lozz08
PostPosted: 07/21/2010 17:12 PM    Post subject: Reply with quote

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jackssmirkingrevenge wrote:
Mr.Sandman wrote:
Dear lord jack, you just love 1up'ing people Laughing


Lol I know that's what it looks like, but actually this has been in the pipeline for a few weeks now, I was just waiting for the pen I ordered to arrive so I could cannibalise it for parts Wink


jajaja, we all know who the star of this forum is... in australia we have a thing called tall poppy syndrome for people like you...
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jackssmirkingrevenge
PostPosted: 07/21/2010 21:25 PM    Post subject: Reply with quote

aspiring machinist
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Joined: 15 Mar 2007
Posts: 18051
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clemsonguy1125 wrote:
In the second picture is that solid epoxy you used to hold the barrel in the center


That's silicone tubing, it keeps the cap in place.

Quote:
in Australia we have a thing called tall poppy syndrome for people like you...


What exactly are "people like me"? Razz
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