Mechanical Parts - Forum https://theopenexo.nau.edu/community/mechanical-parts/ Discussion Board en-US Mon, 06 Apr 2026 03:14:24 +0000 wpForo 60 Mechanical Testing for 3D Printed Motor Mounts https://theopenexo.nau.edu/community/mechanical-parts/mechanical-testing-for-3d-printed-motor-mounts/ Tue, 31 Mar 2026 09:27:32 +0000 Hi,

I am currently experimenting with and validating different 3D printing materials for the 3D Printed Motor Mounts. I was wondering if you could share what tests you conducted to validate your design using the Onyx filament.

I am specifically focusing on the hip ad/abduction block (both the hip and leg sides), as well as the motor-to-leg shell interface. What mechanical tests would you recommend for these components? Additionally, based on your testing and experience with OpenExo, what are the primary load cases acting on these parts?

Thanks,
Lauren

]]> Mechanical Parts laudew https://theopenexo.nau.edu/community/mechanical-parts/mechanical-testing-for-3d-printed-motor-mounts/ Elbow exo build guide? https://theopenexo.nau.edu/community/mechanical-parts/elbow-exo-build-guide/ Mon, 16 Mar 2026 21:37:52 +0000 There was a forum post related to a question about the elbow system that was mistakenly deleted (sorry!). 

Answer: We are currently working on the elbow build guide and expect to release it by the beginning of April. 

]]> Mechanical Parts Zachary Lerner https://theopenexo.nau.edu/community/mechanical-parts/elbow-exo-build-guide/ Ankle build cable crimps https://theopenexo.nau.edu/community/mechanical-parts/ankle-build-cable-crimps/ Mon, 26 Jan 2026 21:17:45 +0000 I am following the ankle build guide, but I am stuck on the last steps of using the cable crimps to secure the steel cable through the pulley (image attached). In the BOM, the only cable crimps listed are McMaster 3914T11. However, it seems too small to be able to fit both ends of the cable through. I was wondering if the cable crimps that were referred to in the guide are different from what's listed in the BOM or if I am looking at the wrong BOM. I would appreciate it if you could let me know the product number. 

]]> Mechanical Parts delta https://theopenexo.nau.edu/community/mechanical-parts/ankle-build-cable-crimps/ Confusion in hip assembly. https://theopenexo.nau.edu/community/mechanical-parts/confusion-in-hip-assembly/ Thu, 20 Nov 2025 01:20:18 +0000 while I am assembling the abductionblockouter to motors. The wiki says to use M3 screws but it cant fit in the block. I checked with 3d model which i used to fabricate aluminium where the holes has diameter of 2.5mm, which is same has my fabricated part, and there are no threads inside the holes, how to fit it. Help me, am i making any mistake?

]]> Mechanical Parts HarshithDeshalliRavi https://theopenexo.nau.edu/community/mechanical-parts/confusion-in-hip-assembly/ Parallel Elastic Elements https://theopenexo.nau.edu/community/mechanical-parts/parallel-elastic-elements/ Thu, 28 Aug 2025 17:18:51 +0000 How would you recommend adding parallel elastic elements to a joint?

]]> Mechanical Parts ssh252 https://theopenexo.nau.edu/community/mechanical-parts/parallel-elastic-elements/