Talk:SAE Prusa Mendel

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Could this be merged with Prusa Mendel by providing the options for metric and imperial under the Bill of Materials? I'm working on documenting Prusa right now and I'm not a big fan of having to do the extra effort to keep the 2 pages in synch because we've forked this. --TheOtherRob 16:10, 18 November 2010 (UTC)

Because the SAE version currently assumes only 2 size fasteners (#6 and m3) and it only uses 608 bearings, I think it's worth having a branch. But There will be a LOT of commonality between the 2. People are easy to confuse, and if you start giving instructions with a lot of cheviots, you get nasty emails :--Spacexula 22:32, 18 November 2010 (UTC)

What size is a no. 6 SAE screw? I want to print an SAE set but the holes sizes in the stock metric config are way too big for my machines so I can't trust the SAE config.--Nophead 16:26, 16 January 2011 (UTC) says size 6 is 0.138 inches (for the screw) or 0.146 (for the hole) Bushing 07:45, 21 January 2011 (UTC)

Is there a page with the SAE conversion for the Wade's Extruder? This list use SAE parts for the everything but the extruder, but metric for the extruder? It would be nice if it were all SAE.

Part Numbers

What are the part numbers good for without knowing the store they are from? --Tagno25 16:43, 3 March 2011 (UTC)

They are all McMaster parts.

washer size

One RepRapper suggested

  • 1/4" washers 90126A029 1 (Yes, 1/4" washers fit over a 5/16 rod, and the 5/16 washers are too big for some areas of mendel.)

Is this alluding to the "Binding issues with Z leadscrew/washers" problem[1], or is there some other problem with 5/16" washers?

Another RepRapper changed[2] that to

  • 5/16" washers 90126A030 1 ( 1/4" washers need drilling out to fit over the rods )

Is this alluding to the problem mentioned at SAE Mendel -- ( "I had to mount them in my drill press and file down the threads by a hair" ) -- or is there some other problem with 1/4" washers?

Is there some way to tweak the design so we could use the same size washer everywhere? --DavidCary 18:41, 5 June 2011 (UTC)

In my experience, the 5/16" washers are too large in multiple places - they don't sit flat in the concave parts of the vertexes and they rub on the outer races of the skate bearings. The 1/4" washers that I got fit great over the 5/16" inch rod. Maybe the RepRapper who changed it a second time bought higher-tolerance washers than I did. I'll add a section as a heads-up --JS 14:56, 9 June 2011 (UTC)

Cad Files

I am an Autocad Modeler and would like to contribute Printed Part models for this project. How can I add my models to this page? link frame-vertex-foot