People I would like to thank
Captain Slug- For making the +bow which got me into homemades, l+l Cs, and for making the Diy: External Air Tank.
Forsaken_angel24- For making the Angel breech which made this gun possible.
Whoever owns McMaster Carr- If you don't know why I'm thanking them just leave now.
It started like this
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/prototype.jpg)
Finished product
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/SANY1395.jpg)
The gun next to a recon.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/SANY1396.jpg)
I didn't even plan that it just was a coincidence.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/SANY1397.jpg)
As you can see it's about the same size as a +bow.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/th_SANY1401.jpg)
The video was taken at 100psi and at the end I think it was at 70 so it is inefficient but who cares it's semi-auto.
Ranges are about 30-40 feet. So not that good, but it can be improved.
On a recent test at 120psi one dart went 60 feet
On to the Write up.
For version 2 of the valve see page 2.
*It is more of a guide, so you still need to be able to problem solve and figure things out yourself.
Materials
1)Brass
19/32
9/16 2 sticks
17/32
1/2
15/32
7/16
13/32
3/8
5/32
2)Tools
Pipe cutter For Tightening Rings Only!!!
Dremel or other metal cutting device that doesn't deform the metal.
Drillpress
Bits: 1/8, 9/16 spade, 5/32, 1/4, 7/64
Scrollsaw
Screwdrivers
Good ruler
Fine tipped sharpie
6-32 tapping bit and tapping handle
Safety goggles (So shit won't get in your eyes)
Dust mask
3)Other stuff
Goop
Magstrike trigger valve
Epoxy putty
Super glue
Hotglue gun
PVC cement/primer
Spray silicon lubricant
some scrap wood I used a 1x4
Solder/ soldering iron (I used a blow torch
![:D](http://nerfhaven.com/forums/public/style_emoticons/default/biggrin.gif)
A eyehole or hook screw that wont bend easily.
1 1/2 bolt that wont bend ever.
Label paper print l+l Cs templates on it.
4)McMaster
If it has a * you can get it at a hardware store.
8580k28
4880k55 x2*
48925k95 only 1 FT*
85805k28
9654k921 or strong rubber band
51545K77
5012K36
5006k53
91780a131 x2
91780A133
90309a154 x2
90402a146
90402A144
9087K61 x2
5) Air tank
Either use a low pressure air tank like this one, or a high pressure like this one
Breech and Barrel construction.
1)Start off with your barrel make it like the picture.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/breech-1.jpg)
I still need to experiment with different lengths and with or without the tightening rings. (I only used 4 rings)
2) Start cutting brass pieces so you have all the pieces in the pictures.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/breech-2.jpg)
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/breech2-1-1.jpg)
Don't worry about anything besides pieces that are square or rectangular and dont make holes yet.
All your brass pieces should look like this. (I forgot 1 half in piece)
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/SANY1346-1.jpg)
3) Breech cover
-Flare out 1 end of the 4 1/2in piece of 19/32 with pliers
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/SANY1349-1.jpg)
-Assemble it the same as an angel breech with the 19/32 from above, 1/2in of 9/16, 1/2in of 17/32, and the 4 1/8in of 1/2. The flared end should be away from the 9/16 and 17/32.
4)Breech pipe
-take the 3/8, 7/16, 15/32, and the 13/32 and nest them together like so.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/SANY1352.jpg)
-Glue them into each other so the finished product is this.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/SANY1356.jpg)
5) Breech piston
-Take the 4 1/2in of 17/32 1/2 of 9/16 and 1/2 of 19/32 and glue them together like so.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/SANY1357.jpg)
-The 5 in of 9/16 is the piston cover all you have to do is drill an 1/8 hole 1/2in from one end only go through 1 layer of brass; like the picture.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/breech2-1-1-1.jpg)
6) Now you need to bust out your scrap wood and make a clamp similar to this one to hold your Breech piston and Breech cover.
![Posted Image](http://i687.photobucket.com/albums/vv236/louiec3/semi%20auto/0729091049-00.jpg)
Solder those two pieces together making sure the flared end of the breech cover is away from the solder joint.
Edited by louiec3, 09 August 2009 - 07:23 PM.