Horst Hohoff
Established Member
Hello,
It has already been mentioned, that overheating is not such a big issue with HSS, it is stable up to about 570°C. But nevertheless I always plead for grinders with half the normal speed and 40 mm wide wheels. The Creusen TS 7500 is such a machine ( available from Axminster ). I was happy to get one of the last Hegner grinders with electronic control and I recently sharpened a bunch of toolsteel tools for a friend. There was no sign of overheating at all, which is mainly due to the slow speed. Wet grinders like the Tormek do a good job, but the others are faster. And if a low speed one is used there is no danger of overheating anything.
It has already been mentioned, that overheating is not such a big issue with HSS, it is stable up to about 570°C. But nevertheless I always plead for grinders with half the normal speed and 40 mm wide wheels. The Creusen TS 7500 is such a machine ( available from Axminster ). I was happy to get one of the last Hegner grinders with electronic control and I recently sharpened a bunch of toolsteel tools for a friend. There was no sign of overheating at all, which is mainly due to the slow speed. Wet grinders like the Tormek do a good job, but the others are faster. And if a low speed one is used there is no danger of overheating anything.