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15-11-2018 #11
Tried a new 12mm carbide bit today.
Lovely finish but degraded after approx 5m of cutting distance.
I tried upping speed from 8k and feed from 800mm/min
Here's some pics of the bit afterwards, some heavy wear.
Maybe I should have lub'ed...
Am I still going too slow in rpm/feed or should I flood with coolant?
(the reason I did this dry was that I haven't got my cooland set up yet...)
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