two leadscrew assembly questions

[forgetcolor]

I'm trying to figure out how the leadscrew and associated components go together in the JGRO. From what I can tell, this is the sequence:

motor attaches to leadscrew (using a coupler)
leadscrew is supported with the anti-whip block
leadscrew attaches to axis it moves through the backlash nut (it's the rotation through this nut that literally moves the intended axis)
leadscrew is held in place at opposite end using nuts tightened against washers against flange bearings (lock washer on inside, flat on outside)

Presuming this is correct, I have couple questions:

1. I guess tightening down these nuts at the end doesn't restrict the movement of the screw? Is it that these nuts will tighten against the bearing's moving part and not the MDF around it?

2. If I use dumpsterCNC parts, how does the anti-backlash nut attach to the axis being moved? I don't see any screw holes on that nut. Are his thread clamps part of this solution? Do I need to build a block to attach to the axis being moved that the screw runs through so that the dumpster nut can push against and then be held in place with thread clamps? Or maybe I just build a block and use a forstner bit to cut a flat bottom hole in a piece of MDF and sandwich the nut between that and another piece of MDF? A photo would be worth a lot of words for me on this if you have one.

thanks!!

[TommieK]

If you haven't already read through Glidergider's build thread "Diary of a Foamcutter" you should. In his thread he asks a lot of the same questions and is answered with pictures in most cases. That thread answered 95% of my questions befrore I ever had a chance to ask them. On my build I stayed with the 1/4-20 so I can't give you specifics, I am hoping to upgrade in the near future so some of the responses you get may be helpful to me. Good luck with your build and maybe post a picture or two once in a while. Tom