Building 2 different net launchers. The first one is huge and uses a 2" solenoid release valve. The PVC is curing now. Hope to do a pressure/leak test tomorrow. Then maybe I can test the launcher this weekend and see how far the net spreads before terminal velocity.

Missing one part for the small launcher (yet another trip to the store). Both are for use in our office nerf wars. (and for capturing people who forget to come to the design meetings)

Photos please!
(also, I think you mean "wily", or at least I hope so)

Ha Ha, yes wily. Didn't notice the typo

awesome. frelling awesome.

I'd feel the need to start carrying scissors with me at all times, if I didn't already.

sweet jeebus.

whats the pressure source? canned CO2? shop air?

For the big one, shop air. I have a 5 gallon portable air tank/compressor, so I can fill it for 2-3 shots without energy.
The little one, a bike pump will fill pretty easily.
I've seen pressure recommendation for PVC upwards of 100 PSI, but I like having my abdomen shrapnel free. So I am thinking 60-70 PSI max.

The last potato gun I made, I wrapped in hockey tape 4-5 layers deep to keep any catastrophic failures from shooting out sharp pieces. I think the big one will get that treatment as well. even though its already quite heavy.

PSI and PVC: Schedule 40 PVC can easily handle upwards of 60 PSI with no problem. I speak from experience. I wouldn't go much higher than that.

However, over time, pressurized PVC vessels become brittle and the chance of catastrophic failure goes up. In this case (and in the potato gun case), since the device should be unpressurized most of the time, you'll have years of non-lethal entrapment goodness ahead of you before it becomes a problem.

What are you using for a net?