Centroid Community CNC Support Forum

I have happily been using Acorn and CNC12 for almost 3 years. Despite buying one of the Centroid suggested Intel Nuc's and following all the detailed suggestions in the communication error bulletin 270... I could never solve this problem. I updated the suggested drivers from the mfg websites, ran ...

I am starting to think about installing the tool changer.

The TTS tool holders have a 3/4" diameter shank that is about 1.375" tall. This means the spindle would need to move upwards about 1.5" to clear the top of the tool holder. Is there any reason that the spindle would need to be raised ...

Thanks for the tip! Really appreciate that.

Thanks Uwe. I thought I would try them because Fusion allows you to specify the chamfer diameter and the counter sink depth is automatically calculated. The counter sink actually looked great. I think I am going to try it again with a chip breaking to help clear the chips.

I am counter sinking a few holes for M5 flat head screws in 6061 aluminum. I am using a nothing fancy single flute 5/8-inch 90-degree counter sink (see below).

The manufacturer said to run it at 300 surface feet per minute and 1.5 though per revolution. If my figures are correct, this would mean ...

Thanks Uwe and Marc. Very much appreciated!

Thanks Uwe. M4 it is! I use almost all metric screws.

Hello Uwe,

I did a test and tapped the M5 holes in the walls of the tube that are less than .25 inches thick. The data sheets you shared show a pullout load of 1116 lbs. for a M4.5 and 1246 lbs. for an M5.

If this was your project... would you use M4.5 screws?


CORRECTION ... There are no M4.5 ...

Got it. Thanks.

Thanks for the info on the pull-out force. I was surprised that the pull-out force for M4.5 vs M5 was not that dramatic. With eight M4.5 screws holding the face plate to the inner tubing... I think all is good :D

On the outer tube, I am going to see if I can use the M5 screw if ...

OK. I think we were talking about two different things. You were referring to the screw that moves the bracket in and out... Correct?