Cutting along the flat side of a horizontal mill.

Yes, it is, and 4140 ann. cuts quite easily, better a 3/32" endmill than 1/16 --- no worry about burning up a HSS endmill with the RPM of the horizontal !
 
I want to cut a precise slot on my horizontal, however no tooling exists for the width I need. Can I skim .010 off with the flat face to the side?

Why not just use a narrower cutter and take two bites at it !

Oops, misread that ! I thought it was 1.05" sorry.
 
Yes, it is, and 4140 ann. cuts quite easily, better a 3/32" endmill than 1/16 --- no worry about burning up a HSS endmill with the RPM of the horizontal !
Calculator is spitting out DOC 0.023 IPM .7/.4 I'll try on scrap
 
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