Petercro's Mini Juice Box MkII review

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clyde2801

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Managed to get a prototype of petercro's mini juice box, 2nd version from him for a review.

http://www.e-cigarette-forum.com/forum/modders-forum/64983-e-pipe-juice-machine.html

It's essentially a home made proto-juice box that he himself fashioned while trying to make himself a juice pipe. Uses a stock rn4081 atty, 18650 battery, mini project box, etc.

Nice, neat little design that had a few flaws and shortcomings:

1. Battery connection. Peter ingeniously used copper tape instead of conventional wiring to conduct electricity in his mod. The 3000mah 18650 battery barely fit into the box, so the copper tape, plus a little soldering was used to make connection with the battery instead of conventional connections. Unfortunately, the box would flex, and cause intermittent power problems.

2. Glue mishap. Plastic tubing not completely secured to copper atty intake pipe, which caused leakage, loss of pressure and tubing to come off. Stuff happens, and this is a proto mod.

3. Switch problems. Large, heavy duty button was used, that was not really suited to a mod. It was a type which seemed to be better being on a panel or a desk somewhere and meant to be used only by the tip of a finger pressing directly downward upon it. It didn't lend itself to easily activating with a finger or hand pressed upon it, say at an angle.

The above problems, along with the break in of the atty, caused the unit to work intermittently for a week, and become unusable in two weeks.

Positives about the design:

1. Great size and shape. Promises the benefits of a juice box in a smaller form factor.

2. vaping was superb when it worked as intentioned. It had a warm, wet vape that had adequate throat hit and brought out all of the flavor of whatever juice I was using. The 4081 atty can stand up to some pretty heavy use and juice at 3.7v.

3. Pumping hardly required. When the piping became detached, I used almost all of the excess or slack to get everything situated again. There was no slack after my redneck repair, and only a small tiny loop between the copper pipe intake and the bottle. The result was that the simple act of inhaling on the mouthpiece seemed to somehow draw enough liquid into the atty to work. I'd only have to pump the bottle at all when I was down to the last half of the bottle. This may be further improved in a future mod where the bottle is placed directly underneath the atty without the tubing having any bends or loops in it. If this improves the priming through inhalation function better, a squeezed bottle design may not even be needed.

4. Dead atty? No problem! Flooding? Fix in 3 seconds! The 4081 stock atty was fixed to the top of the mini box like it would be with any super e-cig battery. Screw old one off, screw new one on. Unlike the JB mod, this one's atty is stock and easily replaceable. It rarely flooded, but when it did, it was easy to take the atty off, blow excess juice out of the battery end, and reattach. Most of any flooding from excessive pumping was vented out through the atty's intake holes above the threads onto the outside of the box. I'd rather it escape there than from inside of the mod.

Final verdict: Not ready for prime time, but tantalizingly close. The Mk II, or 'Tardis' suffered from some design limitations, mostly from shoehorning so many components into such a small box.

If these limitations can be remedied by conventional battery connections, a better (maybe mechanical?) switch, and improving on its inhalation juice action while in a smaller form factor, the juice box may have met its match.
If peter can solve these issues on his next version, I'd be glad to actually buy one from him outright.
 
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clyde2801

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Great review Clyde. Are you that kid Mikey that was in the cereal commercial way back when...except grown up now?? "Give it to Mikey...he'll try anything"! LOL

Keep up the good work Petercro!!

Actually, Mikey hated everything. I'm just fickle, and have a big mouth....:D
 

clyde2801

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From e-juice pipe machine thread..

"The Post Mortem

1. Copper tape. Works really well when space is limited, but I would advise dropping a little solder across any joints as the conductive adhesive does seem to loose its conductivity a little.

2. The Push Switch. 12v 6a, Works fine but is not really designed for constant vaping use.

3. The LED. Stopped working. (I did not use a resistor (my fault) but the other 2 mods I'm running are working OK, Maybe just a bad LED).

4. Rubber tube to brass tube connection. Again my fault. (Not enough glue).

5. Battery connections. Working fine.

6. Soldered joints. All good. (virtually no resistance).

7. The Atomizer returned with mod. Dead (no resistance).

8. All other glued and box joints are fine.

Conclusion

The MOD is virtually sound.
I changed the atty added a battery turned on main switch and hit the button.
Vaped like a dream.

If using copper tape, must solder joints.
Make LED socket for easy replacement.
And I'm already working on a mosfet touch switch, Very little room required to install it.

When clyde returned this mod to me, he also sent to dead attys 510's I think.
Atty 1. the coil had burned out.
Atty 2. the coil had fused. (NOT GOOD). put a meter on it and virtually no resistance.
This second atty could have caused major battery problems.
I'm taking the same route as Mr Puff and have ordered polyfuses.

I would like to thank Clyde for the review and his time in working with me on this project.
I know he is a very very busy man.
The moment I get my switch problem sorted and tested, I will be sending him the next attempt."

Crap! Didn't think of changing the atty on it, even though I had some spares on me for the purpose. The failure of the led, along with the atty frying, led me to assume there was a general electrical problem. I'm glad to hear that the design is functionally valid.

When Peter gets his next creation ready, it will go up against the Mr. Puffer and (hopefully) the carlos juice box for vape trek, the next generation.

BTW, had anyone else ever wondered why Jean Luc Picard had such an English accent?
__________________
 

firhill

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With all due respect, If a review is done, shouldn't a photo of the product be with it?
Please :)

I clicked on the link in the OP and figured that's what it looks like...batteries and cardboard and wires hangin' out, so I figured I'd want something a bit more "enclosed".
 

petercro

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Just thought I would show you how far it as evolved.

This is a pre-Video, I give Clyde Access to before he received the mod.

watch
 
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