Total plywood 1 sheet 4x8 3/4 in., 4x4 1/2 in.
Worked seven steady hours today on the router.
Finished four large adjustment blocks - changed the design some, hopefully picture attached. Recessed and set with epoxy the hex nut for adjustment block. Will likely be using 1-1/4-20 bolts all the way around to allow second jam nut. There isn't enough space with the 1 inch bolt.
Partial finish the eight small adjustment blocks - all the holes cut.
Completed support-motor side, support bearing side. I ran these assemblies through the table saw to square up as initial cut was with a guided circular saw. Next one I would leave these a bit long to allow finish cut.
Base support structure and bed support completed, design chage again, I'll take a picture later. Much less bracing complexity, if more is needed I'll add later.
Will be using 1/2 acme rod with home brew preload assembly. Enco has this on sale for $7/6 foot, nuts for $0.99 till mid Jan 05. Measured .003/.004 backlash at a number of points, not great but consistent.
Dave at Hobbycnc was kind enough to send a replacement resistor (I soldered in the right place for a 4 axis board, mine is three, I coudn't remove so left it in) so the board is done. |