Centroid Community CNC Support Forum

Marty...
Not saying that isn't a well built machine. But on the other hand, there has to be some reason that virtually all US mfgrs have eliminated single drive gantry machines.

To save money over what a dual screw setup would cost and make it more saleable? Once running, and since there is little chance that you will dislodge the servo position, apply 20, 30, 40, 50# of force front to back on one side of the gantry while watching a dial indicator on the other. Then you wil...

Marty... Did you post that picture as one that was rigid enough to need require a dual drive? If so, I would suggest that it is one that would need it for sure. Machines like that can skew a tenth of an inch in a heartbeat, just from cutting force on one side of the table to the other. I even spec d...

I want to build a 4x4 router. But I am going to likely go with one screw right up the middle for the Y axis in order to avoid the issues you have. Heavy linear guides and trucks on the sides. Don't do it, Marty, it's not worth it. Twin screws are much better on a wide gantry and provided you use St...

You will need Pro license that matches the serial number of your Acorn

I think that you could do this with 1 input and one output using a DPDT relay. One side of the relay toggling between 2 home limit switches, the other side toggling either the enable or step signal, if enable is not available Relay (output#) inactive Home (Dual motor axis) as per normal routine. Bac...

I must have missed Tom's post in all the forum activity of late. Tom, thanks for posting. I understand the convention as per the linked doc. My question was: In many cases, maybe even most that I am familiar with, programmers and machine builders adjust the function of certain axes to add feature to...

Clay... Only instance I can remember replacing a spider was on a ballscrew Z on a router in a bus factory that plunged thousands of 3/8 holes over 2 shifts a day. After 2 years. That was the 1 5/16" diameter 6 legged spider. We figured close to 30K cycles (15K holes) per day. Ballscrew only mad...

Well done Keith. Thanks

Clay...
Look at www.ruland.com