On Friday, 6 April 2018 19:08:21 UTC+1, Dave Plowman (News) wrote:

Decided to just go ahead with what I have, for cutting. Angle grinder in a
stand with steel cutting discs. And wondered if I'm using the wrong
technique?

A new disc cuts well, but soon seems to get blunt (or clogged) without
looking badly worn. Thinking it might be my Chinese Bosch ones, bought
some Rhodius (made in Germany) from ToolStation, which were more
expensive. And if anything they are worse.

It's cutting through the top of the square that is the problem. Once
through that it rips down the sides. And I can rotate it to cut the bottom
vertically.

Grinding discs depend on pressure, which drops as teh disc sinks into the work. I rotate workpiece or keep altering grinder position to keep cut rate up.


NT