Hi,
I have a small DIY CNC and I'm facing some issue when try to machine holes.
Let me explain a little, when I make some square parts, there is no problem, the part is exactly the right size in both axis.
When I try to make a hole, the diameter is always 1mm less than the expected value.
Has someone already had this kind of problem ? I'm pretty sure it's not linked to backlash because I mesured the table displacement when making the hole and it's ok.
For example, I try to make a hole of 8mm with a tool of 3.17mm.
The X and Y are moving correctly (around 4.8mm), but the resulting hole is only 7mm instead of the 8.
One more precision, I'm machining MDF.
Thanks for your help, if any