Does anyone have experience using 1/8" shaft carbide endmills with distance rings (i.e. PC board mills) with the Proxxon tool? If so, how repeatable is tool insertion, both tool-to-tool and successive inserts of a given tool?

I realize that the Proxxon collet has a tapered OD , but finger-tightening it, even with the little lozenge wrench, should not be too variable.

If the tools were repeatable (or maybe heat-shrunk aluminum rings...) I could populate a higher reach of the tool table with lengths for the little endmills (separate, of course, from the primary spindle tools).

Thanks,

Randy