Canning Jar Lids
Description
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: protoparadigm.com/blog/2012/08/what-to-do-with-a-3d-printer-make-canning-jar-accessories/
Instructions
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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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/thi...
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.
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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.