SAE Mendel

From RepRap
Revision as of 20:41, 7 August 2010 by Glasswalker (talk | contribs) (Created page with '{{Development |image = |status = Experimental |name = SAE Mendel |description = Building a Mendel entirely from SAE (north american standard) hardware/fastners. |license = [[GPL…')
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Crystal Clear action run.png
SAE Mendel

Release status: Experimental

[[image:|center|190px]]

Description
Building a Mendel entirely from SAE (north american standard) hardware/fastners.
License
Author
Contributors
Based-on
Categories
Mendel Development
CAD Models
External Link



Summary

An attempt to build a mendel from 100% SAE components. In Canada (and USA I hear) SAE parts are not only MUCH easier to find, but are much less expensive as well... This should help reduce the price, and make sourcing parts alot less painful for those of us on this side of the pond.

I've begun my build, and I'll be making basic jot notes here as I go... Once done, I'll photograph, and update a BOM for the SAE build, so that others can recreate my results.

Notes

  • Using 8-32 screws instead of M4
  • Using 5/16 instead of M8
  • Using 6-32 screws instead of M3
  • Bearings from Ultimachine that I got are just a hair too small for the 8-32 screws (like .05mm) so I had to mount them in my drill press and file down the threads by a hair. nuts still work fine, and now bearings fit, but going forward might want to get different bearings.
  • SAE nuts are a little bigger than metric. Trapped nut holes are a pain. I can make the 6-32 nuts fit, but not 8-32. So that means dropping the screw sizes for those spots as well... We will see if this causes problems. The fit is still tight but it works.
  • SAE 8-32 washers are higher diameter than M4, so they are too big when put against a bearing (touches outside of bearing). So need to use 6-32 washers and they work perfectly. (note 6-32 washers will only fit on an 8-32 screw after the filing trick I mentioned above)