Sorry I thought this thread was dead. I got frustrated and stopped checking.
A lot of progress on getting materials. I have both pieces of channel cut to size. I have cut 2" x 6" pieces of 3/8" steel to use as the bearing mounts for all 6 sets of bearings. I have been trying to find a suitable piece of steel for the gantry at work but nothing yet. I was considering using another piece of the 6" x 2" channel but may try out a 2" x 2" piece of square tubing with 1/4" wall. It seems kind of small though.
I setup a gauge at work to measure deflection in the center of a 46" piece of the tubing suspended between two cinder blocks. I couldn't get a reading after standing on the center. I figured the sbr20 rails would only add to the rigidity. Any thoughts on the channel or tube?
I have made no progress on the 3d model as my 30 day trial is up. I plan on buying as soon as I'm settled back in from a month away traveling for work.
What kind of screws go into the sbr20 bearing blocks? I plan on using the same screws to attach the rails to the steel.
Anyone have a source for wedge shims? The channel I have has a taper where the nuts/bolts will have to be tightened.
Thanks for your help guys. I'll take pics and post them asap. I'll check back a lot more often now that my questions are being answered.
Sent from my DROID RAZR using Tapatalk 2