Page 1 of 1
Machined* pengun
Posted: Thu Mar 14, 2013 10:37 am
by wyz2285
A cocky guy from my school challenged me to make a "nice looking" stuff that shoots
. 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.
Posted: Thu Mar 14, 2013 12:53 pm
by Brian the brain
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?
Re: Machined* pengun
Posted: Thu Mar 14, 2013 2:50 pm
by jackssmirkingrevenge
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
Posted: Thu Mar 14, 2013 3:14 pm
by wyz2285
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
How is the barrel ( going to be) sealed to the endplug?
Epoxy
Looking good for a drill press, you're going to love having a lathe
Thanks Jack, I know
Posted: Tue Mar 19, 2013 9:23 am
by wyz2285
Finished the end-cap, all done
Posted: Tue Mar 19, 2013 9:32 am
by jackssmirkingrevenge
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...
Posted: Tue Mar 19, 2013 9:48 am
by wyz2285
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
Posted: Tue Mar 19, 2013 10:59 am
by jackssmirkingrevenge
What calibre is it?
Posted: Tue Mar 19, 2013 11:06 am
by wyz2285
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
Posted: Tue Mar 19, 2013 1:00 pm
by Brian the brain
It looks awsome!
but...why U no use epoxy?
Just kidding...
What pressure will she run at?
We will see some damage pics right?
Posted: Tue Mar 19, 2013 1:54 pm
by wyz2285
Thanks BTB, right now only use 200psi, it will run on 1000 later
Of course, and a video too.
Posted: Tue Mar 19, 2013 2:39 pm
by Brian the brain
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..?
Posted: Tue Mar 19, 2013 2:47 pm
by wyz2285
The core of a Bic pen fits perfectly inside and makes a wonderful dart
Posted: Sun Jul 07, 2013 12:39 am
by limmitless
can we see a video of the assembly?
Posted: Sun Jul 07, 2013 9:27 pm
by Blitz
Hah, sweet!
Yeah, for smaller diameter things, a decent drill press can make for a ghetto lathe.
Not as precise, but better than nothing.