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Posted: Fri Jul 25, 2003 11:26 pm
by BillieJNR
I've been using a 9" diamond blade to dry cut 50mm blocks. It was only a ten quid cheapie, but it's been doing a good job. Quite suddenly, it started to have poor cutting performance along with lots of sparks. There's plenty of diamond left, so I'm not sure why it would stop cutting properly?????
Posted: Mon Jul 28, 2003 6:25 pm
by 84-1093879891
Poor performance? Lots of sparks? You're out of blade, Billie. You might think there are lots of diamonds left, but the diamond coating on those cheaper blades is pretty thin and soon wears away. Time for a new blade. methinks.
Posted: Mon Jul 28, 2003 8:06 pm
by BillieJNR
Oh well, I've had my ten quids worth; cut over a hundred blocks. I did hear from somebody who knows very little more than me, that these things could be dressed/sharpened by cutting some sandstone or tarmac? Thanks for the info.
Posted: Mon Jul 28, 2003 8:19 pm
by 84-1093879891
You're wrong - they know even less than you! ;)
You cannot re-sharpen a spent blade by forcing it through bitmac or sandstone. If you could, every contractor in the trade would be at it!