To satisfy the needs of the OP, there have been other suggestions.
I don't think he's looking for alternatives, he's looking to experiment, so he's looking for suggestions within the experiment...It seems like everytime someone has an idea it gets shot down on theory alone. I sometimes think it's better NOT to do a "What do you guy's think..." thread and just go ahead an post the results, (like with Biermuncher's aswesome junk, or Yuri's or Flyguy's inventions) AFTER the fact...Then we all do what we do with Yuri, Bm's or Flyguy's ideas, bow down to the greatness and creativity of them....Then we make our own.
If the OP had just gone and made it, then put up a thread called, "look at my CPVC Pin," many of us would be clamoring for more info and a parts list...I know I would, hence my support of it IF it works.
Yeah, I know that a Corny may be cheaper and will definitely work...but what if this does as well? We don't KNOW that it WON'T work...Many THINK it might not, but until it is made and either fails or actually works, then that is just conjecture.
Think of all the "Breakthroughs" in this hobby over the last few years. Think of all the awesome ideas we've gotten from posts on here as well...Or think of the things "repurposed" from other places but which we can't live without.
Cooler for a MLT
Aquarium Pump
O2 Welding Bottle
Aquarium Airstone
Beer engine from RV water pump
Turkey Fryer
Flyguy's Ballvalve on the mlt
Stainless Steel Braid from a plumbing part.
Dogfish Head's 120 minute IPA hop adder made from an electric football game
The kegorator made from a dorm fridge, or freezer
The Ranco Controller
March Pump
The immersion Chiller made from copper tubing
And the list goes on....I'm sure, knowing human nature that when/if anyone mentioned ANY of those things (things that we can't live without now, btw) it was probably met with the same kind of rancor that ideas like this meet with here.
"You want to do WHAT??? You want to stick 50 feet of copper tubing in your brew kettle? Copper's toxic, you'll probably kill everyone who drinks your beer, you idiot!!!"
But guess what...it works, doesn't it? Despite what "old timers" must have said.
I try to encourage anyone who wants to try something new to try it...If it means there's another alternative gizmo that works, then I'm all for it.
Yes there may be a "better" way, yes the OP can go by a corny.
But this might serve a purpose too...
And whether or not it ultimately works, some people, myself included, have a heck of a lot of fun experimenting and trying to make new things.
I like to make halloween decorations, the last few years I've been trying my hand at animatronics. Now I know I could go to Halloween USA and buy all the nifty, sleek animated geegaws with micro electric motors...sometimes even cheaper than what it ultimately costs me to make it. BUT there is something infinitely more satisyfing to take a wiper motor and laptop powersupply, or a rotesserie motor, some pvc pipe and some second hand clothes and make something that works, because I made it happen, not some low wage worker in China.
(This has an wooden offset cam attached to a power drill under the seat, the body is PVC, springs, padding and yards of duct tape. The shocking headpiece is a collander, a lamp gooseneck, and a DJ strobelight. The chair was an old stuffed chair discarded on the side of the road, with the stuffing torn off. The whole shebang runs off an old sewing machine foot pedal operated by the person giving candy, it controls the strobe, the rapid up and down of the body and a tape recorder looping the sound of a guy screaming as he's getting tazered.)
It took over a month for my buddy and myself to make it, usually on saturdays, taking a break to watch UofM football and drinking beer.
Kinda reminds me of telling some people I make my own beer...they usually comment that it's probably easier, cheaper and takes much less time to just go buy some...
But I tell them, that it's not as much fun...