Single flute carbide cutters

[blackburn mark]

In that video yes I think so. Now I tend to put a bit of coolant in the slot after each pass as it helps, especially on a small part where the heat otherwise just builds up.

i find it a bit of a dilema when cutting small slots... adding coolant tend to make the chips stick in the slot so theres a lot of re-cutting of chips going on or cut dry and clear the chips with a bit of air

i cut acetal dry and use WD40 in alli like you say, a couple of dabs on each pass..... watching your vid has me thinking that it may be worth me trying to cut alli dry more aggressive than i do so the chips clear themselves and forgo the coolant, it might be interesting to see how long one of these cutters will last cutting alli dry

the voice in my head tells me it will all end in tears but without a bit of science i guess we would still be eating bananas