So I ordered some of the 6 ml bottles now I sit and wait to see if they actually get delivered 

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18650 Woodvil
The hole in the cap for the tube is a made to be a tight fit and the cap/bottle is a sauce/juice bottle with a sealing cap (like the Vmod bottle), where Rob's bottle is a dropper style...if you remove the dropper you need an o ring...or did that just confuse things![]()
^^^what he said....sorta. Ha. Yeah, it's a different type of plastic....it's soft. When I poked a hole in it, I left it small enough that I sorta had to squeeze the tube through it. It's very snug around the tube. I've used these now for two whole days, and they're working great.
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Like this?
A problem I see with this is that the ridge where they join makes the bottle tight in the space....so when I put the battery in, it's really snug. And the door is harder to slide on (I can live with that.) I wonder if the battery would actually drop if the spring collapsed. I'm afraid it might stay held up by the tightness of the bottle. So....Quigsworth....how do you (can you) weld the two bottles together without much of a seam? Or....how do you get rid of the seam? Or....do you have a method that doesn't make much of a seam?
I heated up a non-stick pan on the stove, then I cut the top off of one bottle and the bottom off of the other. I pressed each side down on the heated pan until I could tell they were getting sticky, then I quickly stuck them together and held it a second until it seemed stuck. I put water in it to make sure there were no leaks, an voila!!! Do you have a better method?
EDIT: Holds about 12-13 ml.
I found the same bottle set that Jan bought on Amazon for less than $3 shipped... Amazon.com: Travel Plastic Spice Sauce Bottle 11pcs #3515: Kitchen & Dining
...The seam made it a really tight fit which I thought might interfere with the dropping of the battery if I had a short, but mostly it interfered with the squonking. One of the best features of these little square bottles is how soft they are and how easy they make squonking. The seam totally messed that up...
I've welded a number of bottles now, mostly cause its fun, and I like the smell, and torturing bugs with a magnifying glass was starting to give me grave Karma concerns.
I've found the seam thing isn't so much an issue if the bottom bottle is cut right at the top (where it turns into the neck) and the top bottle just makes up the final height you want...I was really bummed I didn't get my square bottles this weekend...
Just got in the square bottles from Japan... how very cute!!! AND... the middle size fits into a woodvil 18650 PERFECTLY. But it's only about the same volume as the original round bottle.
Given the low profile on the teeny red caps, if this were to be fused in the middle, it looks like it would double the ml volume in the 18650 woodvil. My question is... how did you handle leakproofing the red tops??
Just got in the square bottles from Japan... how very cute!!! AND... the middle size fits into a woodvil 18650 PERFECTLY. But it's only about the same volume as the original round bottle.
Given the low profile on the teeny red caps, if this were to be fused in the middle, it looks like it would double the ml volume in the 18650 woodvil. My question is... how did you handle leakproofing the red tops??
Glassgal, it LOOKS like it's the same volume as the old bottle, but if you put water in it then measure it, you'll see it holds around 9 ml (instead of 6 ml.) the square shape allows more volume. Fill one of the round bottles then pour it over into the square bottle and you'll see.
The fused bottle doesn't squonk as well. Read thru this thread.....there's a section about the fused bottle. I posted a pic then talked about it. The seam from the fusing interferes with the squonking for me.