Fortified M19 X 140 Bolt
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You never know when you need a good bolt.
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- Printables
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- Mechanical Parts
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- Creative Commons — Attribution
A family member is into diamond art and has a 3D printed roller thingymabob that clamps to the table to hold the rolled up canvas before the cover gets peeled back to expose the glue.
The bolts similar to this are also 3d Printed. In anycase, one of the bolts sheared right at the connection, likely due to incorrect print orientation.
Rather than having the already proven weak bolt reprinted I thought i would take a look at it and see if i can model something stronger. After a little research into what was needed I came up with a triple pronged solution.
Change the material to PETG instead of PLA
Change the orientation of the print so tightening the bolt does not seperate the layers.
Make sure there's structural walls inside the part and not just infil.
I have shown the inside view so that you can see the fortification for yourself before you print. The channels go through most of the part, well into the head of the bolt and finish shortly before the tip.
Orientation note - Ensure that one of the flats on the side of the bolt head is on the build plate and use supports. Before hiting print, check through the sliced layers and ensure that the ectrusion path follows the length of that part. For my printer, I got this by orienting the part to the X axis.
Ensure Z top/ bottom are at a minimum 0.15 to help with support removal easier and protect the thread.