Most grinders are sold with a coarse(about 60grit) and a fine(100grit)
wheels. 60 is ok for roughing out the tip, say from a blank, but for
obtaining a really good finish on the metal,you need, in my
experience, a 150 to even say 200 grit wheel. Even then you will find
honing the edges with a fine hone is recommended to get the best
finish. Can't help about a supplier. Tomuol.
They have them at aldi every 6 months or so
..must be about due now ..they have the white fine wheels and grey
they are ok .had no trouble with them .
all the best.markj
About the one thing I wouldn't buy cheap is grinding wheels. They can be
lethal if they fracture. I often use all sorts of machinery in the
workshops at work but am not allowed anywhere near the offhand grinders
because I dont have the appropriate formal training.
Go to J&L (www.jlindustrial.co.uk) and get decent ones. Make sure they have
the right bore diameter for your machine, proper paper washers each side and
a speed rating suited to your grinder. Hang the wheel from its centre on a
screwdriver and tap it gently - should "ring". If it doesn't, send it back.
Don't overtighten it and don't run it without the guards. When you first
power up stand well out of line and run it for a minute or so before
approaching. Make sure its dressed true before use.
If you are keeping the old wheels store them well out of harm's way. If
they are done with, then break them up and dispose of them.
This is one area where health and safety is no joke - exploding grinding
wheels can do a lot of damage.
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