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.

--
*Bills travel through the mail at twice the speed of cheques *

Dave Plowman London SW
To e-mail, change noise into sound.

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

On 06/04/2018 19:01, 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.


Have you tried starting with it rotated by 45 degrees, then in 90 degree
steps - so that you are always cutting into a corner?
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

In article ,
Roger Mills wrote:
On 06/04/2018 19:01, 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.


Have you tried starting with it rotated by 45 degrees, then in 90 degree
steps - so that you are always cutting into a corner?

Did wonder about that. Sadly the vice on the stand isn't big enough to
allow mounting the tube at 45 degrees.

--
*I finally got my head together, now my body is falling apart.

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Roger Mills wrote:
On 06/04/2018 19:01, 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.


Have you tried starting with it rotated by 45 degrees, then in 90 degree
steps - so that you are always cutting into a corner?

Looking at the grinder stand, I can adjust the position of the vice
relative to the blade. At the moment it is set so the blade hits the
centre of the tube face. I'll try altering it so it hits a corner first.
The vice isn't big enough to hold the tube at 45 degrees.

--
*A bicycle can't stand alone because it's two tyred.*

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Dave Plowman (News) wrote:
Have you tried starting with it rotated by 45 degrees, then in 90 degree
steps - so that you are always cutting into a corner?

Looking at the grinder stand, I can adjust the position of the vice
relative to the blade. At the moment it is set so the blade hits the
centre of the tube face. I'll try altering it so it hits a corner first.
The vice isn't big enough to hold the tube at 45 degrees.

After some experimenting found a decent place for the vice so the disc
starts the cut on a corner. Needed a packing piece for the movable part as
the thread wasn't long enough. But have now managed a clean cut with only
one rotation of the work. About half way through now so having a coffee
and cake. ;-)

--
*Acupuncture is a jab well done*

Dave Plowman London SW
To e-mail, change noise into sound.