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(I think this is a homemade, but if it belongs in the modifications, please move it admins/mods)
So in another thread, you saw thestick's awesome breech with the spring mechanism.
This one is the primitive breech - because I made out without a dremel, mitre box, fancy stuff. I only used limited materials. I would say this is the introductory level breech. It is so easy I did it, and I did it with ease.
What you need to have
Breech length
The length of my PETG was 23cm, and the conduit 21cm. [addendum: longer lengths are better] So the extra 2cm of PETG was wrapped with tape and I placed it on a conduit coupler then superglued in. Epoxy also works, but I had ran out by Friday). With the coupler, it can stand straight without me having to sand it down minutely to make sure the cut was even.
The cut where the bullet would fit was the most important. Compared to Coop772's breech, mine can fit a streamline just by dropping it into the hole and then some space. It's about 8cm.
Cutting the halfpipe part
I used a saw to draw up about 7 cuts halfway down the pipe; 7 cuts in 1cm intervals. Then I tried to cut diagonally between the intervals. It kinda worked, though cutting diagonally is very difficult without a mitre box. So I used the pliers just to pry it out. I kept snipping until a dart could fit just by being dropped into the breech. As you can see in this photo there's a part where I've "overcut" with the saw. Then I sanded it down to try and even out the plier cuts.
Here is a diagram.
Taping for 'snugness'
With the PETG, the length that I mentioned earlier was arbitrary; it was the last lengthy piece I had so I just decided to use the whole thing. PETG to 20mm orange conduit is almost snug fit, but a roll of tape around it will enable the PETG not to slide around. I decided to put one on either ends. The middle one serves as an indicator when the breech is completely open; hence I don't need to open further than that.
And to fit into a 15mm PVC coupler, I just used a few rolls of tape. Clean up the inside of the conduit, place in the PETG. My breech has a few dents from the pliers cutting a bit too much. If you can't clean it out by sanding, use some epoxy putty, hot glue, any filler. I prefer the former.
Future considerations
Current problems are sometimes when I place it in, it's not aligned straight. To fix this I needed to sand down either ends, as well as stop being a crapshoot. This works best with blue foam darts. This has also been documented, wherein the quarter pipe is seen as a better alternative for loading darts than the half pipe (at least with the brass breeches). I still prefer the halfpipe to keep the conduit stable.
With this you'll never have to single again.
---------------------------------------------------------------------------------------------------
An alternative to this would be to wait for your birthday/get a job, acquire some 'Edith Cowans' (our equivalent of Benjamins) and buy a dremel.
So in another thread, you saw thestick's awesome breech with the spring mechanism.
This one is the primitive breech - because I made out without a dremel, mitre box, fancy stuff. I only used limited materials. I would say this is the introductory level breech. It is so easy I did it, and I did it with ease.
What you need to have
- -20mm orange conduit
-Inf0rm3r's PETG
-Diagonal cutting pliers
-Hacksaw
-16mm conduit coupler
-tape (sticky, masking, cloth, electrical, whatever)
Breech length
The length of my PETG was 23cm, and the conduit 21cm. [addendum: longer lengths are better] So the extra 2cm of PETG was wrapped with tape and I placed it on a conduit coupler then superglued in. Epoxy also works, but I had ran out by Friday). With the coupler, it can stand straight without me having to sand it down minutely to make sure the cut was even.
The cut where the bullet would fit was the most important. Compared to Coop772's breech, mine can fit a streamline just by dropping it into the hole and then some space. It's about 8cm.
Cutting the halfpipe part
I used a saw to draw up about 7 cuts halfway down the pipe; 7 cuts in 1cm intervals. Then I tried to cut diagonally between the intervals. It kinda worked, though cutting diagonally is very difficult without a mitre box. So I used the pliers just to pry it out. I kept snipping until a dart could fit just by being dropped into the breech. As you can see in this photo there's a part where I've "overcut" with the saw. Then I sanded it down to try and even out the plier cuts.
Here is a diagram.
Taping for 'snugness'
With the PETG, the length that I mentioned earlier was arbitrary; it was the last lengthy piece I had so I just decided to use the whole thing. PETG to 20mm orange conduit is almost snug fit, but a roll of tape around it will enable the PETG not to slide around. I decided to put one on either ends. The middle one serves as an indicator when the breech is completely open; hence I don't need to open further than that.
And to fit into a 15mm PVC coupler, I just used a few rolls of tape. Clean up the inside of the conduit, place in the PETG. My breech has a few dents from the pliers cutting a bit too much. If you can't clean it out by sanding, use some epoxy putty, hot glue, any filler. I prefer the former.
Future considerations
Current problems are sometimes when I place it in, it's not aligned straight. To fix this I needed to sand down either ends, as well as stop being a crapshoot. This works best with blue foam darts. This has also been documented, wherein the quarter pipe is seen as a better alternative for loading darts than the half pipe (at least with the brass breeches). I still prefer the halfpipe to keep the conduit stable.
With this you'll never have to single again.
---------------------------------------------------------------------------------------------------
An alternative to this would be to wait for your birthday/get a job, acquire some 'Edith Cowans' (our equivalent of Benjamins) and buy a dremel.
Last edited by 2120 on Thu Apr 07, 2011 2:18 pm; edited 2 times in total
