Grinding and buffing ....
Discussion
Treated myself to a Clarke 8" bench grinder yesterday, and although the machine itself is gvfm, the grinding wheel and brush supplied are, shall we say, just wrong.
The grinding wheel has a very high wear rate, and I can't see how it can be used to sharpen tools: I think an HSS 10mm drill bit would destroy it. I did about ten pieces last night and its got a 3mm deep groove in it already.
The brass brush, OTOH, is super abrasive and will eat mild steel for breakfast, which kind of defeats the object of the exercise, which is cleaning and surface polishing.
So, throwing this one open to those who know more than me, who can recommend an 8" grinding wheel that will do the job of be-burring mild steel and sharpening HSS drills, and an 8" brush that will remove surface rust without destroying the workpiece.
The grinding wheel has a very high wear rate, and I can't see how it can be used to sharpen tools: I think an HSS 10mm drill bit would destroy it. I did about ten pieces last night and its got a 3mm deep groove in it already.
The brass brush, OTOH, is super abrasive and will eat mild steel for breakfast, which kind of defeats the object of the exercise, which is cleaning and surface polishing.
So, throwing this one open to those who know more than me, who can recommend an 8" grinding wheel that will do the job of be-burring mild steel and sharpening HSS drills, and an 8" brush that will remove surface rust without destroying the workpiece.
to clean up surface rust, use a knotted wheel on a grinder, easier than the bench item:
Horrible bloody things though, the wires eventually come off and go all directions, will easily pierce skin if you "catch" one.
Safety eyewear is a must, I usually wear welding gloves when using them and have fleece on to cover arms.
Horrible bloody things though, the wires eventually come off and go all directions, will easily pierce skin if you "catch" one.
Safety eyewear is a must, I usually wear welding gloves when using them and have fleece on to cover arms.
Edited by Crafty_ on Thursday 27th September 18:50
mondeoman said:
The grinding wheel has a very high wear rate, and I can't see how it can be used to sharpen tools: I think an HSS 10mm drill bit would destroy it. I did about ten pieces last night and its got a 3mm deep groove in it already.
That isn't the grinders faultYou have bought yourself an 8" bomb
Go research grinding wheel safety as they can be very nasty machines if abused
Oh and don't wear gloves
Leather/fabric catches where as skin doesn't
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