Affected Tool or Resource: CNC - Resurfacing bit - Tool 10
Team, Group or Volunteer who usually handles this type of ISSUE or REQUEST (Please tag using the @ symbol. Start by typing @TEAM_ to find most responsible teams): @Evelyn
Details of ISSUE or REQUEST (Please be as specific as possible):
The bit offset seems incorrect, it’s consistently cutting too shallow. Tested a same depth cut with this bit and two others. The other two matched. I tried following the guide but this bit specifically requires manually setting. If possible I’d like to be taught how to do the manual setting myself as well. Thanks a ton!
Please remember that VOLUNTEERS will be helping to resolve this issue. While everyone works very hard to fix things quickly, sometimes things take time. Please consider Volunteering to help keep everything working well in our makerspace!
Hey John, I’m no longer in the Lansing area, but I still get alerts for “CNC” topics. I wrote the SOPs for this machine. The problem with setting the tool offset for the big surfacing bit in slot 10 is that the cutting flutes are spread so far apart that they wont hit the toolsetter during the length probing routine. If you want to try to remedy the issue, I believe the procedure is as follows:
Start the machine, reference axes (home), and load any tool with M06 Txx, preferably a flat end mill.
Manually jog the loaded tool over a flat spot on the spoil board.
Slowly lower the tool, and use the paper method to find the Z height of the spoil board.
With the tool just grabbing the paper, use the “Origin Preset Window” to set (UAO, 1) X, Y, and Z to 0.
Jog the tool up and then switch to the surfacing bit with M06 T10.
Bring the tool over the same spot on the spoil board by activating (UAO, 1) and then doing G0 X0 Y0.
Slowly jog the tool down until it just grabs the paper.
Use the “Tool Offset Preset” section on the “Tools” screen to manually set the T10 Z offset to “0” at this position.
It has been a long time since I did this, so I’m not 100% sure this is correct, but feel free to give it a shot. If you’re not as comfortable with the machine, maybe @Evelyn or @RealCarlRaymond can lend a hand.
Your suggest agrees with all the sources I’m able to find for other CNC machines, so I’d wager you’ve got it exactly right. I’ll give it a try…carefully.
I corrected the tool offset of the resurfacing bit (tool 10). I followed the directions provided above. I tested it 3 times after and it seems perfect, but I’m not an expert. If you’re using this tool on your project I’d suggest using the MFG to run the program slowly while verifying it’s working as intended.