Comments (7)
The most likely causes I can see:
- loose fit of the bearing at the top of the nozzle
- loose fit of the PTFE tube inside the bearing
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I identified the problem areas, and fixed it by modifying the mesh in fusion360:
- The bearing was loose, so I made the hole 12.10mm diameter
- My O-rings were actually 1.5mm tall, so they weren't sealing against the nozzle. I modified the end to pull the nozzle further down so that it properly squashes the O-ring
Now I can pick up my OpenPnP test pieces (hole punches) :)
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ok, glad it worked for you! I think it make sense to make parts with different tolerance..
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A parametric model would work well, so the user can adjust the tolerance parameters
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The new nozzle was a bit thin for me, and my printer sucks, so I dipped the whole lower part in conformal coating and let it drip dry. It has way better suction now.
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@bonz099 Thanks for the feedback, the tolearance is a challenge for different 3D printer, a parametric model will help in this case, I will see if I can provide something for that.
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Related Issues (8)
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