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Oldie Wrench

by AnsonB Aug 18, 2018
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I was excited to get this printed as I wait for my metal version. I am having a lot of trouble with the threaded rod and nut though. The prints look great, but the tolerances are so tight, the threaded rod breaks in the nut. I wish these were a standard thread so I could run them through a tap and die.

Heres the settings that I used in fusion to create the thread.

Thanks.. I tried it again and used some 3-in-1 oil this time and I managed to get it.. Great work BTW..

I appreciate it. I do have a updated version in the works I'm just trying to really get 3D printing threads down so keep a look out for that!

Getting the tolerances on the nut and thread is really hard especially since every printer and filament have their own set of tolerances that can vary pretty wildly. I found deburring the inside of the nut on both sides, and unscrewing a few turns and rescrewing anytime I got resistance helped get it threaded. Also, I used a little of this Sewing machine oil which seemed to help.

The threads should be a standard thread. I forgot which I used but I'll check the CAD files again and let you know probably in the morning.

You could make the thread part a hole to fit a long bolt. Make the thumb nut with a long encased nut and you will add a fair amount of strength to your design. Good job mate...

Honestly I've been super impressed with the strength of this model, the thread especially. I have a version 2 I'm still perfecting where the thread prints with the head so no need for glue which was my main goal.