Canning Jar Lid, 3D Printed

by DrewTM, published

Canning Jar Lid, 3D Printed by DrewTM Jul 25, 2012

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This is a one-piece, wide-mouth canning jar lid that can be printed on a Rep-Rap, Makerbot, or similar 3D printer. I made it to close a jar of hydrochloric acid, which will attack metal but not ABS plastic. The threads work very well.


Print upside-down, with the flat top stuck to your build platform and the threads facing up.

If it doesn't fully seal the jar, you can try smearing or drizzling a little paraffin wax around the inside edge of the lid, where the jar lip touches.

Both ABS and paraffin wax have good resistance to hydrochloric acid, which is what I made this lid to contain.

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When printing with ABS, is there a need to scale the lid to account for shrinkage? For example, most ABS prints recommend printing at 101% scale to account for shrinkage during cooling.

I believe I printed it at 100% and it fit perfectly, no scale adjustment required.

question Why would you NEED Hydrochloric when
Muriatic Acid will do for almost everything...

They're the same thing. From Wikipedia: "Historically called acidum salis, muriatic acid, and spirits of salt, hydrochloric acid was produced from vitriol (sulfuric acid) and common salt." http://en.wikipedia.org/wiki/Hydrochloric_acidhttp://en.wikipedia.org/wiki/H...
But it is actually a jar of circuit board etchant, which is made from hydrochloric/muriatic acid: http://www.instructables.com/id/PCB-Etching-Solution-Cupric-Chloride/http://www.instructables.com/i...
Yes, you'll probably need PLA for a jar of acetone, although I'm not sure that PLA is completely impervious to acetone over long periods of time. Let us know!

OK will do Ill have to set the Layer height to 0.1 -- 0.3 dose good but your trying to get a Solvent or Liquid seal so it will have to be a 100% print or near to it 0.7

I guess I will need PLA to close an Acetone jar....

This lid has the best feeling threads of all of the ones I've printed thusfar, great job!

Thanks! I did put effort into getting it just right. 8]

DIY 3d printed lid for a jar of hydrochloric acid...seems legit. :)