by romanjurt, published

water-fancy-tab by romanjurt May 17, 2013

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the old square 7x7mm squareconnector watertab broke and a replacement was not around. i designed a new one in tinkercad - polygon stile.

to make it more rigid, i came up with a nice detail: two slots on each side of the square-hole will carry two small coins to work as stong metal guidance.

seems to work good so far!


print it out with massive wallthickness (i used 2mm) and hammer two coins into the slots on the bottom.

designed in tinkercad. here: https://tinkercad.com/things/8h03Fjsechd-wasser-fancy-hahn-2/

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water-fancy-tab by romanjurt is licensed under the Creative Commons - Attribution license.

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I had the same coin idea when I was designing a tool for removing/putting in track spikes, but my measurements were slightly off and I never bothered to fix it. Glad to see someone got it right though.

there is many useful applications where the standard pla/abs is just not strong engouh... and pressfit washers, coins or nuts can be used as contact surface...

Nice technique using the coins!

Hmm, it gets me thinking: Would it be possible to heat the inserted coins with a soldering iron in order to slightly melt the surrounding plastic, thus permanently embedding them?

i made the slots just very tight. the coins need to be hammered in. and they stay there forever.

You can make the opening a little smaller and pause your printer when printing to insert the coin :P that way it will be sealed forever in the model