Hello!
Is there supposed to washers between the Z-column and the standoffs? There were some extra washers included with the standoffs, but the ATC instructions aren’t very clear about using them or not.
There isn’t enough clearance between the ATC and the mill spindle head, and there isn’t enough space to retract the ATC assembly on the linear rail via the coupler. I’ve seen previous comments or YT videos talking about this.
Thanks for the help.
Clint
Clint,
The quick answer to your question is; no, there should not be washers between the standoffs and the column. A longer answer is that the larger washers are used between the standoffs and the ATC cabinet, except for on the “Tilt” standoff, which has an eccentric end that fits into the slot on the cabinet. It’s best to initially set the length of the adjustable standoffs (with the large washer on) to be the same length as the Tilt standoff (face to face not including the eccentric). That way the cabinet sits the same distance off the column at all four points. There should be between 2mm and 5mm clearance between the ATC motor box and the Z axis casting when the ATC is at full extension. If not, you need to lengthen the two forward standoffs, which will back the ATC off. It pivots off the two rear standoffs so a small change in the length of the two forward standoffs will result in a significant move of the ATC at the spindle. If that move causes the cutout in the shroud for the spindle to misalign forward or back, you may have to move the ATC forward or back on the slotted holes in the cabinet for the standoffs. Give that a try. - Craig
