Single flute carbide cutters

[blackburn mark]

sweet

are you cutting dry ??

[Jonathan]

are you cutting dry ??

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.

[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

[Jonathan]

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 use both methods when I care about the finish (either that or use a smaller cutter / cut wider slot). After the first few passes put coolant in the slot with pippete, wait for it to go round then blast the chips out of the slot with compressed air then put coolant back in slot and wait... repeat. Depends on the depth and size of the part you may not have to do this for every pass. If it's small part you do as otherwise the billet heats up a lot, then the chips start sticking.

Obviously the best way it to pump the coolant directly over the cutter, but that's not going to end well with an MDF bed!

and use WD40 in alli like you say, a couple of dabs on each pass

I use the white soluble oil coolant from the lathe.