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Cutting disks

F

fuse

Sapling
Joined
Sep 4, 2025
Messages
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Location
Herefordshire UK
Name
Martin
LOCATION
Uk
I have a batch of 1" mild steel angle iron which is a problem cutting
It's nothing special but my chopsaw is struggling
IMG_20260428_112104467.jpgIMG_20260428_112037870.jpg
The disk is fine for one cut but burns and deflects on the next
I have some 1" box section within the same project and this cuts beautifully - it also appears to dress the disk so it can make another cut on the angle iron. This is the type I am using-any suggestion for an alternative?IMG_20260428_112212323.jpg
 
That is a bit odd. What is the lump on the horizontal leg of the angle? Are you cutting off a weld?
It's over 20 years since I was metalworking. Most of the brands we used I don't see on google. I do see Norton at Toolstation and they used to be good.
 
Yes its a weld but it does this on virgin sections too
It goes through the vertical better then finds the horizontal a problem.
Further force on the disk causes big deflection - too scary.
Ive tried a Erbaur and Norton
The material is from a couple of old road signs that a crew threw into my ditch a few years ago.I cleaned them up - surely they cant be some special alloy steel???
I find it odd too that the box section stuff is obviously softer but will temporarily restore the disk
I can use this as a workaround but Id like to get to the bottom of this.
I was wondering about the grade - the Axxxx number?
 
My guess is a low grade stainless steel. Try a light cut with maybe some wd40 sprayed on or get a stainless cutting disc. The flat has more heat build up and work hardens may be what is happening.
 
If it's mild steel, an ordinary hacksaw with a new blade will go through that stuff like a knife through beurre - Rob
 
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