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Canning Jar Lids

by AlexEnglish, published

Canning Jar Lids by AlexEnglish Mar 14, 2012
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License

GNU - GPL
Canning Jar Lids by AlexEnglish is licensed under the GNU - GPL license.

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Thing Statistics

13695Views 3982Downloads Found in Kitchen & Dining

Summary

These lids were inspired by, and designed based on measurements from lids like these: http://www.amazon.com/36010-Mason-Canning-Plastic-Storage/dp/B001ASXI8 . There is a regular mouth and a wide mouth version, these should fit any standard canning jars.

If printed well, and well tightened, these lids are almost water tight (actually, they form a tighter seal than the commercially sold counterparts linked above), but not air tight. These are suitable for use in storing dry goods, non-food small parts, etc., for storing opened canned goods in the refrigerator, and probably for use in the freezer.

The main shape of the lid is deliberately low-poly so it is easy to grip and apply a good bit of torque with bare hands.

These were printed with ProtoParadigm's green PLA on a Makergear Mosaic.

Additional accessories will be released that use this lid as the base.

UPDATE: This thing is a part of a collection of things featured in this post: http://www.protoparadigm.com/blog/2012/08/what-to-do-with-a-3d-printer-make-canning-jar-accessories/

Instructions

Load up the STL for your canning jar (wide mouth or regular) and print. You may have to do some cleanup of the threads with tweezers, but if you clean up the really out of place stray threads (and the ones laying across where the lid contacts the lip of the jar), the small imperfections generally won't keep the lid from threading properly.

If you want to work with the openscad, keep in mind that render times are pretty long if you have the quality turned up on the threads. The comment on that line should give you an idea of reasonable values; the files released here are at a quality of 45.

This thing uses Thread Library by syvwlch (http://www.thingiverse.com/thing:8793) to generate the threads, so you'll need to grab that to render these.

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hmmm. cool part.

Could someone explain step by step how you use the screw library and the openSCAD.

I want to make a version of this that doesn't have facets but is smooth round.

Thanks.

Strange, I am slicing this with sli3r 7.2b and I am getting left hand threads, although the stl image looks like RH, I am going crazy. Has anyone else seen this?

Got it working, but I had to go to the new syvwlch screw library on github and change a line in your source to use the defaults for trapezoidThreadNegativeSpace:

trapezoidThreadNegativeSpace(length=cap_depth + wall_thickness, pitch=6.35, pitchRadius=(rad-thread_height), threadHeightToPitch=(thread_height/6.35),RH=false, stepsPerTurn=45); //threads and hole

Thanks again for your design.

looks nice, i like the two sizes. i didn't know this was on here, so i made my own. (only now did i find this one) i guess i should make a small-mouth version of mine, too. http://www.thingiverse.com/thing:27385http://www.thingiverse.com/thi...

Canning Jar Lid, 3D Printed
by DrewTM

The SCAD file uploaded does not compile as a lid, just a big puck. Something's wrong with the library maybe?

The file may be named differently. Make sure you've got the library in the same directory, and make sure the filename is the same as what the scad file is looking for (capitalization matters as well). You can change the library or the script, just make sure they match. This could be a mistake I made along the way somewhere and didn't notice as far as compatibility goes, but I know the file does work.

I'm finding the same issue Alex, files are definitely named the same: http://imgur.com/WsvHYhttp://imgur.com/WsvHY 

Exactly same issue here. Using latest OpenScad for Mac.

I had the same problem, but then used vastempty's code fix, and it worked great. See his comment elsewhere in this thread.

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