Cool - I’ve been meaning to try some 1/4" bits to see if I can cut parts quicker with more depth of cut and/or faster cutting speed.
I use a mister - it was only $20 from Amazon. Just get one - it is so worth it.
I don’t always use alcohol but it does help a lot. I can sometimes hear the cutting getting tougher and that’s my clue to quick turn on the alcohol and after cutting another 2-3" things smooth out again and all is good.
With a vacuum to suck up the chips - the alcohol typically is evaporated before the dust shoe moves past that area. It smells a little but not that much. It will take a full day of cutting for me to use 1 cup of alcohol up. That is way less than when I apply a couple of coats of shellac to a woodworking project. So I don’t worry about the flammability since it is diffused in such a large volume of air.
I typically use 1/8" carbide bits from - buy them cheap in a 10-pack. Single flute, 1/8" with 0.015 depth of cut and 30ipm.
What do you use with those 1/4" bits - single or double flute???