Ben John-Hynes Posted January 9, 2009 Report Share Posted January 9, 2009 Right, I've never seen a topic about this so I just had to ask as I keep getting crap grinds.What disk do you lot use? Or is it just that I'm a shit grinder? Quote Link to comment Share on other sites More sharing options...
NVWOCI WVS Posted January 9, 2009 Report Share Posted January 9, 2009 thinnest cutting disc you can find. Quote Link to comment Share on other sites More sharing options...
shamus Posted January 10, 2009 Report Share Posted January 10, 2009 a 'metal cutting disc' is what i use, any will do.Next find something made of hard steel (heat treated preferably)Then use the grinder on the steel to create a very sharp edge on your disc and bob's your uncleAnother idea is to increase the 'angle of attack' for your grind, use the grinder more perpendicular to the rim.Best way is to practise on an old shagged rim you couldn't care less about but is the same material oh and wear galsses/goggles aluminium shards seem to go where ever they want. and if its inside (and you value your hearing)...ear defenders Quote Link to comment Share on other sites More sharing options...
Muel Posted January 10, 2009 Report Share Posted January 10, 2009 I've found that the compound of the disc is pretty important, if the disc has a really coarse compound it tends to give heavier grinds.It's good if it's thin, but it's more important to have a sharp point on it.This is only what I've found, other people are bound to have found different discs work for different methods. Quote Link to comment Share on other sites More sharing options...
RobRook Posted January 11, 2009 Report Share Posted January 11, 2009 (edited) My method:I use a grinding disc...I Screw a crappy bolt in to the wheels spindle, Clamp the bolt tightly in a vice so the wheel's horizontal..(Or you could just clamp it back in your frame without the tire on) Spin the wheel, have the grinder at 90 degrees to the rim and away you go..Because its a grinding disc you wont go through the rim by accident.And because the wheel is spinning, the grind will be even all the way round..The disc can even make the wheel turn if you get it right The faster the wheel, the coarser the grind I've found..And you can also press down on the rim quite hard with the grinder to increase the roughness.. Because the wheel's spinning, it doesn't gouge chunks out..Well, That's my way anyway Rob. Edited January 12, 2009 by RobRook Quote Link to comment Share on other sites More sharing options...
psycholist Posted January 12, 2009 Report Share Posted January 12, 2009 I do the same to grind my rims - I find a thin cutting disk gives a harsher grind. Grinding disks give a grind with more modulation, but less hold... Quote Link to comment Share on other sites More sharing options...
Jason222 Posted January 12, 2009 Report Share Posted January 12, 2009 Attack it at a near 90 degree angle. Press hard and move in fast swipes. Be careful not to put deep spots in the rim. Quote Link to comment Share on other sites More sharing options...
Al_Fel Posted January 12, 2009 Report Share Posted January 12, 2009 I use a diamond disc and just run the grinder at a pretty steep angle around the rim. That seems to give me super deep grinds that last ages and are amazing. Quote Link to comment Share on other sites More sharing options...
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