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No actual build to it -- two off-the-shelf parts, no modifications. I've been happy with my dremel, but tried a couple of the 1/4" self-piercing valves, too, really was unhappy with them. Skittering, hole placement, hole size, were just kind of iffy to me. Buzz mentioned he was looking at carrying carto punches, so for kicks I poked at what might work well. He probably has something better up his sleeve but this is pretty solid and the screw, the part that wears, is cheap enough to be readily replaced.
It looks like other set-screw-collar type carto punches. The collar portion is a full 1/3" wide, enough to get screw threads to bite properly while still having a point. From the end it looks like a 1" washer with 0.375" hole in the middle. The donut is about 2/3" wide, which is why the hole gets placed nicely, at about 1/3" up from the face of the punch.
The screw part was a royal PITA. I wanted off the shelf, not something that you had to grind down in any way. I finally dug up a couple options for the right format tap screw. I have a box of one kind in hand, works well, another pack coming in tomorrow, and there's one other source that I'm too cheap to buy (though they would be fine for a supplier, unit cost is low, just that the min buy is 100).
The screw part was a royal PITA. I wanted off the shelf, not something that you had to grind down in any way. I finally dug up a couple options for the right format tap screw. I have a box of one kind in hand, works well, another pack coming in tomorrow, and there's one other source that I'm too cheap to buy (though they would be fine for a supplier, unit cost is low, just that the min buy is 100).
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LOL Bov....Roger Rabbit came to mind....."You're killin me" .....patty cake patty cake..............Pllllllllllllllllllllllleaaaaaaaaaaaaase LOLOL
Here you go: http://www.e-cigarette-forum.com/forum/pay-forward-pif/272989-diy-carto-punch.html#post5426307 For a wrench, it's a standard size hex head, I just use one of the ones I've accumulated over time from exercise equipment.
I picked up a box of the organic phosphate screws, if anyone wants a couple. If you are worried about the coating, just punch a couple of holes in an old carto first, to scrape it off the tip.
UPS delivered my hub today...YAY! I scrounged thru the basement looking for screws that would work to no avail! Now I'm stalking the mailman for Mark's screw 
Wait, that didn't sound right...oh well, it's Bovinia style!
Wait, that didn't sound right...oh well, it's Bovinia style!
They are on the way, I tossed them in our mailbox on the way out. They're 1/4-20, an odd size, PITA to find someone who sold them, that's why I listed sources on the other thread.
Is that anything like mail order brides?UPS delivered my hub today...YAY! I scrounged thru the basement looking for screws that would work to no avail! Now I'm stalking the mailman for Mark's screw
Wait, that didn't sound right...oh well, it's Bovinia style!
If only that were true Mod! I'd box up the one I have and mail him off to Bumf*@#, Egypt..
Figured it out ... that's exactly what I did - punched my holes TOOOO deep.
The cartos worked BEFORE I put them in a tank ... but not after I punched them. Thanks for the reply ...
Hey Freefire!
YES, I figured it out. Watch punching your cartos too deep! Ha,ha. "All is well" once again.
YES, I figured it out. Watch punching your cartos too deep! Ha,ha. "All is well" once again.
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Hmmmm...my week old carto flooded...drat...........now I have to punch a new one
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