BOB T Posted January 15, 2017 Share Posted January 15, 2017 Finished my grinder ,Plans from Wayne Coe .. Have a 1 HP motor (2450 rpm) with a 4" drive wheel I know it`s not a sealed motor but was free . Will build a small shield to protect its somewhat from grinding dust, and we'll see how it performs? When it dies will get a sealed type motor, probably 1 1/2 hp..Just have mounted on plywood base for now, I will eventually make a metal base for the grinder. Planning to use it possibly for a few knives to grind also use it to grind on tomahawks and small axes, not using it exclusively for knives only. I like the way the wheel arm can be set in different positions. Question?? If I did my math correctly the belt speed should be somewhere around 3600 SFPM? I 'am thinking I should have more belts speed? I've used belts sanders/ grinders in other shops and they seem like they're run faster. One thing I noticed I get very few sparks or no sparks when grinding using 60 grit. I would be interesting to know what the other people who have DIY belt grinder/sanders have for belt speeds or what would be the low and high for belt speed?? I did search through the form for information on belt speeds and saw some list, curious what people are actually running and are have good performance with their grinders. thanks Quote Link to comment Share on other sites More sharing options...
WayneCoeArtistBlacksmith Posted January 15, 2017 Share Posted January 15, 2017 Looks good Bob. Most people using single speed motors have 3600 rpm motors. If you had asked me I would have suggested that you use that motor initially and get a feel for the grinder. When that one dies you will probably want to get a VFD and new motor. Let me know when I can help you again. Wayne Quote Link to comment Share on other sites More sharing options...
phabib Posted January 16, 2017 Share Posted January 16, 2017 looks like a really nice build. What are the various configurations of the wheels and platten used for? Quote Link to comment Share on other sites More sharing options...
BOB T Posted January 16, 2017 Author Share Posted January 16, 2017 phabib.. If you search on the web for Wayne Coe Blacksmith .. That's where I got my plans from... Also on his web site has a short video explaining the belt sander/grinder. I have a 2" and 6" rubber wheel plus the tracking & drive wheel both of them are of aluminum. the platten was made from angle iron Quote Link to comment Share on other sites More sharing options...
John in Oly, WA Posted January 17, 2017 Share Posted January 17, 2017 The belt grinder I built has a top speed of roughly 5225 SFPM with the pulley configuration I have now. It doesn't spray sparks all over the place, but it takes the metal down nicely. Some sparks when I bear down on it. Quote Link to comment Share on other sites More sharing options...
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