satchel
off to a rocking start
Member since August 2009
Posts: 19
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Post by satchel on Sept 5, 2009 21:27:10 GMT -5
This is probably a dumb question but what direction does the saw spin while cutting/polishing stones?
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Post by tkrueger3 on Sept 5, 2009 21:54:35 GMT -5
I can't say for sure, but I do know that most circular saws, whether for rocks or for wood, spin in the direction that causes the blade to slice downward, or into the table, at the point where the sawn object meets it.
So if you're talking about a tile saw like the Workforce from Home Depot, or similar, then when you are in front of it, feeding the rock into it, the top of the blade is spinning toward you. That means, for the Workforce saw, that looking at the spindle nut that holds the blade on, the blade will spin clockwise. That's why the spindle nut has left-hand threads - so it will tend to tighten instead of loosen.
Clear as mud, I guess .... Mel, Tony, somebody with better words chime in here!
Tom
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satchel
off to a rocking start
Member since August 2009
Posts: 19
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Post by satchel on Sept 6, 2009 8:45:47 GMT -5
Thanks for the insight Tom, I had a hunch that was the case for saws, after I pondered about it. Is that the case for polishing wheels as well? The reason I ask is because I'm in the process of making my own grinding / cut off machine and I need to know which way to configure the motor mount.
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Post by johnjsgems on Sept 6, 2009 9:01:01 GMT -5
They (saws, wheels, etc.) will turn toward you. Looking at machine from front the left side shaft/nut will be left hand thread and right side right and thread. You can buy shaft adapters that attach to standard shaft sizes if you can't thread the shafts from Covington Engineering and others. They also carry blade washers with recesses, left hand nuts, etc. A wonderful hardware source is McMaster Carr on line and ship usually same day.
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drjo
fully equipped rock polisher
Honduran Opal & DIY Nut
Member since May 2008
Posts: 1,581
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Post by drjo on Sept 9, 2009 7:26:43 GMT -5
With the wheel turning towards you, it forces the material down (usually against a table for leverage) and not up into the air (and your face).
Dr Joe
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Post by Rockoonz on Oct 5, 2009 14:05:37 GMT -5
Thanks for the insight Tom, I had a hunch that was the case for saws, after I pondered about it. Is that the case for polishing wheels as well? The reason I ask is because I'm in the process of making my own grinding / cut off machine and I need to know which way to configure the motor mount. Check the motor you plan to use. Most are reversible so whatever mounting is easiest should work fine.
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