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Results of Neglect - you may recognise these signs.
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Chatter or gouge marks - Diamond broken or chipped.
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Diamond lines on work - Increased diamond wear or broken diamond.
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Chatter marks on work - Diamond is dull and is crushing rather than dressing the wheel.
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Reduced diamond life due to burning - poor flow of coolant on diamond whilst dressing.
Maintain sharp diamonds
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A dull diamond tends to crush the grains into the bond of abrasive wheels and crack them without giving a clean break.
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Grains of wheels that have been crushed in this manner will give the effect of wheel loading - cracked grains will also come out whilst grinding and produce scratch marks in work.
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Some precautions when setting up a diamond tool
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Be sure diamond holder is securely held with minimum overhang.
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Be sure diamond is not cracked, burned or flatted.
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Be sure, whilst dressing, the diamond is not subjected to excessive shocks or bumps.
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For best grinding finishes be sure diamond cutting angle is not too sharp.
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Be sure, whilst dressing, the contact point of the diamond receives plenty of coolant.
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Whilst dressing, diamond cuts should not exceed 0.001" per pass.
