I got a white side 5mm RU1805 upcut bit. (edited: it is an end mill, is this the issue?)
I set it in the router (confirmed the size is correct).
Programmed for drill operation in Carbide.
The holes its drilling are larger.
I added the drill bit as a new tool, and selected it for the operation (even though I’m sure it shouldn’t make a difference for the drill operation since it should just go up and down).
Have no idea what’s wrong, please help.
Are the resulting holes circular, or a bit oval?
If oval, you should check the tram of your setup.
If circular, then the problem could be run-out.
Drills deflect. Note than any tooling used needs to be rated for the RPM the spindle will turn at, and most drills are rated in the hundreds at most.
Endmills, though a bit stiffer/more rigid, will also deflect.
As noted, if the result is oval, then the machine is deflecting.
Best practice is to use a smaller tool and machine as a pocket — if the tolerances require it, leave a roughing clearance and take a finishing pass.
5mm should be pretty stiff, unless it’s a really long tool.
How much oversize? How did you measure it?
How do you measure a hole ? Pins ? Calipers ?
My small hole measuring sucks with calipers.
its not a drill bit.
pins and caliper. its pretty obvious how oversized it is with the pins going in. the bit measures perfectly.
I think they are circle, hard to tell honestly. I dont know why it would be run out because everything seems nice and tightly secured. If i try to move the router at all the entire machine moves with it. The bit itself is very stiff at 5mm. if its runout I dont know how to test for that or correct it.
The correction is to “give the machine its head” and use a smaller tool, leaving a roughing clearance and taking a finishing pass:
(make sure “Stock to Leave” is set to be larger than the difference in size which you are seeing)
Repeat with it set to 0 — you may want to experiment with alternating Climb vs. conventional (this may depend on the material which you are cutting)
Which machine? If it’s a belt driven machine, I can picture the bit driving the spindle a smidge, wallowing out the hole. Screw driven, should be pretty rigid.
Any, machining best practices are machine agnostic.
Thank you, reading this I thought it would work, but with the free carbide create I don’t have the “stock to leave” option only the offset direction. I should just be able to do this manually though.
You’ll need two pieces of geometry, the original, and one inset by the roughing clearance which you intend to leave.
