Dustin Stephens

So Ive decided to build me a 2x72 belt grinder for making knives.  James, maybe you can help me out on this one.  What I need to know is what rpm is ideal for the motor?  I know I need a 1 or 2 hp motor but some are like 1750 rpm and some are 3450ish rpm, which one is ideal for knives?  Im using 2" square stock for the frame, skate board wheels for the platen and tracking wheel and a 4" drive wheel set up on a 3 speed pulley system and using gas struts for tension.  I know that I need to radius the tracking wheel, does the drive wheel need to be radiused as well?  Thanks in advance

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jmccustomknives
Power and rpms a must.  Most guys will have a variable speed set up.  I'm not the best person to ask though, I don't use a 2x76.  I'm a bit of an outlaw in that way.  

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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Anthony San Miguel
When you're grinding steel high speed makes it easier to overheat the steel and take off more than you meant to. Slower is better for steel.
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Hank Rearden
Show your work. I think there are some plans out there. I would like to build one as well. I do have a few things ahead of it though.
code[Maglio.gif]  Keep the fires burning hot!
2020 ABANA Conference in Sarasota New York. June 3rd. through June 6th. Plan now!
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Hank Rearden
Does anybody know of a hood belt sander plan gor 2" x 72" belts?
code[Maglio.gif]  Keep the fires burning hot!
2020 ABANA Conference in Sarasota New York. June 3rd. through June 6th. Plan now!
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Hank Rearden
Found plans you might be interested in.
http://www.parmarng.org/freeidaho/AlSkDjFhG/BeltGrinder/BeltGrinder.html
code[Maglio.gif]  Keep the fires burning hot!
2020 ABANA Conference in Sarasota New York. June 3rd. through June 6th. Plan now!
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Anthony San Miguel
This looks pretty good. If I'm not mistaken, it does have the small wheel attachment option. I have a treadmill motor that I got free and another old GE 1 1/2 hp motor I got at the flea market for $12. Another one of the MANY projects that I can't seem to find the time for.
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Dustin Stephens
Ive been searching for a 2hp motor to run my grinder.  New ones are outrageous so my thoughts are to find a used table saw with a 2hp and use the motor out of it.  My question is will the motor be up to the task of running so long or do I need to find a more "constant duty" one?
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jmccustomknives
I can't say how successful you will be.  I imagine much will depend on the quality of the saws motor.

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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