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Old 11-03-2009, 07:16 PM   #1
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Default Reservoir Straw & Plug Mod (RSP Mod)

This is a variation on this very clever mod:
Must Try! ADM auto drip mod so I thought I should post this one in a seperate thread.

There was some concern about the metal spring corroding. With a 510, you can use the natural ledge on the inside, but that sits pretty far into the reservoir. Or you can special order plastic springs. This method eliminates the metal and also works on carts that are smooth on the interior. It also uses everyday items. This also incorporates Scottbee's notching idea & uses a springier filler like Scotch Brite blue non-scratch scrub pads (one without abrasives) or the blue fish filter foam.

Supplies:
One drinking straw or coffee straw
Scotch Brite Non-scratch Pad or Ehiem Fish Tank Filter
Scissors
Tweezers

Remove the polyfill that came with the cartridge & discard. Cut a drinking straw to about 4 mm below the open end of the cart & notch the bottom. Slide into the cart. If the diameter is too wide to fit in the cart, cut the straw all the way through lengthwise, to remove a section of it. It'll roll back into a tube on it's own. Or use two coffee straws cut to equal length.

Press the end of the empty cart on the greenie to get a template. Cut off the piece. Fill the cart with about 15 drops (on a 510) and plug the end with the filler material using a tweezers. Prod it gently and you should see some of the liquid seep into the pad.

If it floods the atty or leaking, you need to cut a larger piece to seal the end better. If it's not wicking, cut a smaller piece. The only purpose of the straw is to keep the plug from sliding into the reservoir.

You can do a LOT of cart mods with one straw and a pad!

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Last edited by kristin; 11-04-2009 at 04:13 PM.
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Old 11-03-2009, 11:02 PM   #2
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I must admit, it's a real trip to pull the top plug off and not find a drop.. I mean not even the slightest trace... of liquid left down in the chamber. Talk about sucking it dry!
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Old 11-03-2009, 11:38 PM   #3
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Yeah, instead of topping off every 15 minutes & finding most of the liquid still in the filler, I only filled once today!
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Old 11-04-2009, 01:47 AM   #4
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Sadly... as has happened in the past, my poly plug started to caramelize and my liquid delivery trailed off. My consistent use of VG liquid may have something to do with this.

Being a hobby machinist... I have an ample supply of Scotchbrite pads on hand (we use them to polish aluminum and steel on the lathe). Went out and got one, cut it down to size, singed the edges and I now have it installed in a 901 cart.

Initial performance is quite, quite good.. and Kristin you just might be onto something here! I'll hold final judgment until after I get a couple of days use under my belt.
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Old 11-04-2009, 03:20 AM   #5
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I've found that the thicker, more porous stuff like ScotchBrite pads and aquarium filters don't like to wick when they get too dry. If I notice any dryness to a vape it's usually because I've been impatient and hit the Prodigy too often too fast. So I just add a drop to the pad to get the wicking going again.
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Old 11-04-2009, 10:27 AM   #6
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Default love the mod Kristin

just a quick thank you, i'm a noobie at vaping and you saved my day with this mod. quick note on cart capping for the supply challedged out there.
take the original cart filler remove the plastic/latex from the poly fill and use it to to cap makes a leak prroof cap and you don't get the dry out problem as you do if you chain vape like i do
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Old 11-04-2009, 02:47 PM   #7
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Hey, what's with all the Scotts, LOL!

Yeah, I don't think the pollyfill works well with this mod. It has to be something with more resistance, to act like a plug at the end. I can see the polyfill falling out, getting stiff and/or catching on the atomizer bridge.
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Old 11-04-2009, 03:04 PM   #8
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I actually had a cart with Scottyballs' spring mod working perfectly with some polyfill. But then I put the PV in my pocket, which activated the switch, which melted the cartridge before I felt the heat.

That kinda sucked - it was a perfect 6+ hour cartridge setup on a great atomizer. Both destroyed - the atomizer produces nothing but a burnt taste now.

So last night I had to start all over - new atty, puff through the primer, cut a plug of blue filter, go through the ordeal of sizing the filter perfectly... Ugh.

I think I got lucky with the polyfill, and I hate all the loose threads so I avoid it. But ScotchBrite and aquarium foam have their downsides, too.
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Old 11-04-2009, 03:24 PM   #9
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What have you found as a downside to the Scotch Brite? I'm curious what to expect. So far, two days and no problems.

I also found this stuff: Scotch-Brite? Purple Scour Pad No. 2020

Or this: http://www.pets-warehouse.com/Vpasp/...cts.asp?id=505
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Old 11-04-2009, 03:30 PM   #10
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Sorry, I haven't used ScotchBrite specifically, but I assume it may have the drying problem I mentioned a couple posts back.

If you vape too often and the top layer of the blue aquarium foam gets dry it doesn't like to re-start wicking the juice from the cart. ScotchBrite is pretty much identical stuff, so I assume it may experience this minor issue. But it's not really ScotchBrite's fault, it's user error.
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