I have lurked on this forum for a few months. The consensus is that one should acquire a variable speed grinder. The only reason I have seen is that with finer grits you should operate at slower speeds. Now the question. What speeds are recommended for grits 36 through 800? Are there other advantages to variable speed?
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Varialbe speed
- Thread starter MJORG
- Start date
- Joined
- Apr 19, 1999
- Messages
- 3,560
By finer grits I am talking about 180 grit and up.
The reason why people like the slower speed on fine grits is that the finer grits tend to be a little "grabby" because the finer grit belts put more cutting material on the same surface than the coarse belts(more grains per square inch). This grabby nature of the fine belts make it harder to hold the blade against the wheel with out chatter. Slowing the belt down reduces the chatter allowing you to concentrate on the grinding rather than chatter control.
Speed therefor is reduced to whatever speed is necessary to reduce chatter. Coarse belts are of course run at the maximum speed available.
Belt characteristics vary as the belt wears down so infinitely variable speed is more desirable than stepped variable speed.
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george
www.tichbourneknives.com
sales@tichbourneknives.com
[This message has been edited by george tichbourne (edited 21 July 1999).]
[This message has been edited by george tichbourne (edited 21 July 1999).]
The reason why people like the slower speed on fine grits is that the finer grits tend to be a little "grabby" because the finer grit belts put more cutting material on the same surface than the coarse belts(more grains per square inch). This grabby nature of the fine belts make it harder to hold the blade against the wheel with out chatter. Slowing the belt down reduces the chatter allowing you to concentrate on the grinding rather than chatter control.
Speed therefor is reduced to whatever speed is necessary to reduce chatter. Coarse belts are of course run at the maximum speed available.
Belt characteristics vary as the belt wears down so infinitely variable speed is more desirable than stepped variable speed.
------------------
george
www.tichbourneknives.com
sales@tichbourneknives.com
[This message has been edited by george tichbourne (edited 21 July 1999).]
[This message has been edited by george tichbourne (edited 21 July 1999).]
- Joined
- Dec 14, 1998
- Messages
- 4,870
Geogre is dead on it here!
The control is what your after with the finer
belts. Also heat control.
One note :
When grinding Titanium slow the grinder down until you dont see any sparks. This will stop your belts from burning up fast and give them good life.
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Web Site At www.infinet.com/~browzer/bldesmth.html
Take a look!!!
The control is what your after with the finer
belts. Also heat control.
One note :
When grinding Titanium slow the grinder down until you dont see any sparks. This will stop your belts from burning up fast and give them good life.
------------------
Web Site At www.infinet.com/~browzer/bldesmth.html
Take a look!!!