Easier O-Rings: The hacksaw method
Posted: Fri Mar 29, 2013 4:10 pm
Ok first off, I drew my inspiration from both US Water Rockets and Air Command's website tutorials and I've combined them with a smattering of my own desire to avoid difficult steps in construction. Thanks for putting those tutorials out there guys!
This process will create a stepped launch tube with an O-Ring seal.
The parts are the same:
1/2" CPVC pipe
1/2" PVC pipe
1 #94 O-ring
PVC/CPVC cement
Tools needed:
Hacksaw
Now 1/2" CPVC ALMOST fits inside 1/2" PVC. Using previous methods, the piece of PVC I had needed to be bored out slighty to get the CPVC to slide in. That was not exactly easy, especially if you don't have exactly the right size drill bit. Then it hit me, after building 6 launch tubes, how to make this easier.
Here's my hacksaw method to get that CPVC easily installed in PVC:
1. Cut a 3/4" ring off the PVC
2. Cut a 2" slit down the middle of one end of the CPVC.
3. Put a small amount of glue on the CPVC towards the end of the slit
4. Push the 3/4" PVC keeper ring on the CPVC until it covers the end of the slit.
5. Push the O-ring on up to the keeper ring
6. Add small amount of cement to the end of the CPVC
7. Push the PVC pipe on to the CPVC until it presses up against the O-ring.
8. Cut the CPVC and PVC to desired length and install in your launcher.
Thanks,
Bugwubber
Pictures:
This process will create a stepped launch tube with an O-Ring seal.
The parts are the same:
1/2" CPVC pipe
1/2" PVC pipe
1 #94 O-ring
PVC/CPVC cement
Tools needed:
Hacksaw
Now 1/2" CPVC ALMOST fits inside 1/2" PVC. Using previous methods, the piece of PVC I had needed to be bored out slighty to get the CPVC to slide in. That was not exactly easy, especially if you don't have exactly the right size drill bit. Then it hit me, after building 6 launch tubes, how to make this easier.
Here's my hacksaw method to get that CPVC easily installed in PVC:
1. Cut a 3/4" ring off the PVC
2. Cut a 2" slit down the middle of one end of the CPVC.
3. Put a small amount of glue on the CPVC towards the end of the slit
4. Push the 3/4" PVC keeper ring on the CPVC until it covers the end of the slit.
5. Push the O-ring on up to the keeper ring
6. Add small amount of cement to the end of the CPVC
7. Push the PVC pipe on to the CPVC until it presses up against the O-ring.
8. Cut the CPVC and PVC to desired length and install in your launcher.
Thanks,
Bugwubber
Pictures: