Erlenmeyer flasks caps and pump holes
by waste, published
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I always wanted to create a liquid soap container that was not store bought.
I bought some Erleynmeyer flasks and wanted to put a korktop. But korks are quite expensive to get and sometimes their size isnt ideal. So I thought that I can design one.
So here we are, two different tops, each in two varieties. one whole and one with a pump hole for the liquid soap pump.
the first is designed with a bottom diameter 31mm (a little bigger to accont for the ABS shrinking) and a top diameter of 36mm so it fits every flask with the same characteristics
The second one has a bottom diameter of 22mm and a top of 35mm
I also posted the freecad file so anyone can change the sizes. in the freecad file I also have a stand for the shperical flasks.
print your part and as it is still hot try to fit it in the flask. even small varations and shrinkage can make a cap unusable. adjust in freecad accordingly
edit 13/7/13 I also made a cap for wide sized flasks, around 42mm diameter and experimented quite a lot with all sizes. The diameter of the erlenmeyer flasks is not so tightly adjusted so in the same brand and even in the same batch you can have a good fitting in some flasks while on others can be bigger or smaller. You can just mix and match and then print wider/narrower according to what you lack. A trick I found in order to counter that is to tap the cap on the flask while it is still hot. That way you ensure a nice fit, even though as it cools down it will shrink a bit more.
thats especially true with pla, as the pla tends to shrink more than the usual 1mm of the abs shrinkage
Erlenmeyer flasks caps and pump holes by waste is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
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