I have a situation where I need some bearing shims in a bit of a hurry. The shims needed are .005" and .010" thick and have an OD of 190mm and ID of 170mm. I am considering sandwiching shim stock between MDF with hopes of maintaining flatness and reducing burrs. I understand that feeds and speeds factor in to this as well. Since I am under time constraints I will probably use the tooling on hand and attempt to use a 201 1/4" end mill.
Does anyone have any thoughts on this? Am I way off the mark? Do you think the 201 can handle the steel layer or will it quickly chip and be ineffective?
I cut 0.5-2.5mm thick steel sheet on my S03 frequently.
For your shim application - my first thought would be to use masking tape and super glue to hold it in place (unless you have to do a whole lot of them).
I would recommend using an end mill meant for cutting steel - something like a 3 or 4mm diameter one of these (I haven’t bought from this supplier before - but have used similar):
Your biggest issue might be RPM’s. I have a spindle motor, and for cutting steel I run only 3-8,000 RPM.
If you are using a router motor, and have to use the end mills you have - just stand back a bit further than normal
