I have sharpened the cobalt drill a couple of times off camera, but the RPMs just was too high for it to keep its edge.
@paulrodrigues556220 күн бұрын
Saw a video where they compared a dry drill vs others cutting products and oil was better than dry , WD40 being one of best.
@improviseddiy20 күн бұрын
I also prefer cutting oil, but you need to manage the heat sometimes and flood coolant is the best for that purpose. The chip colour dictates what I'll be using.