Step 9: A FULL TRAVEL TOOTHPASTE for less with no mess
Good Luck
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More often than not, I just grab the two tubes of toothpaste, hold them firmly together and squeeze from the large tube to the small tube. If you don't do it right, you will have a bit of a mess on your hands...
just kidding,
I consider myself incredibly coordinated, but it is tricky to get the transfer to work when the source tube is nearly empty, let alone trying to keep it neat, and this device really makes it super easy, even for my wife, whose thumbs bend like Gumby
you can also find it by google paint tube wringer or paint tube squeezer
Because as you can see if you look at the caps, there is a recessed area at the tops, and if you drill them after, you're always going to have a gap inbetween the caps then, and toothpaste will get caught in there and could lead to a bacteria buildup if not washed well. Which, lets face it, it's not going to be easy to wash.
SO.... drill each cap, and then use some of your adhesive of choice in that recessed area of the caps so that there's no longer that germ party pocket.
doing it this way may mean you'll have to drill it again after everything is dry, but probably well worth the extra steps to make sure you're going to avoid mold in your nifty lil contraption.
it is probably a good idea to reduce the contact between toothpaste and sealant which someone else mentioned. You can see that I had 4 empty travel tubes. you can squeeze all the air out with tubes connected, (no air = no mold).
I chose to drill after to save a step.
If I wanted to add steps, which is never a good idea, I guess I could have trimmed the recess off each lid prior to and resuming as I did above.
I want to see people making these things, it is so easy!