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#1
12-21-2005, 09:04 AM
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Belt Sander
 This was a fun project and I am finding out that it is one of my most used tools in the shop. It uses standard 60" belts and can be readjusted at different angles as appropriate for the job. The spring loaded idler makes belt swapping a 5 second operation. A bigger motor would be nice - that one shown is 1/2 hp - sufficient, but cannot be pushed too hard. I sand mostly alum. on it and the belts self clean when they are reversed.
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#2
12-21-2005, 10:27 AM
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Nice work! I always like to see someone take such pride in their project.
I also have a belt sander in the shop, 118" x 4" belts.. 7 1/2 hp 3ph motor... what a hog! Hercules couldn't slow it down... eats 1" steel plate like sweet candy... oh...yeah.... fingertips & knuckles vanish in a flash! Probly the biggest time saver I own. Makes parts look very profesional, nice finish. Once again, nice work, Put some real power on that baby, and let the sparks fly!!!!!
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#5
12-21-2005, 03:16 PM
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Thats a really cool looking sander....very nice work.Can you post some more pics? I've got a 1 HP motor I've been saving for this very thing.
Cheers, and Merry Christmas to all....
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#6
12-21-2005, 04:13 PM
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yeah, definetely here on the more side of things...do you have some rough plans that some of us could work off of. Most of the stuff I can get from the picture you put up there and then work out my own design from that, but I would be very interested to know how you setup the spring loaded tensioner.
Absolutely great work by the way...
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#8
12-21-2005, 06:10 PM
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ohh, one more thing I thought about...have you contemplated making some of the more complex components for the belt sander (things like the curved plates for those of us who don't have a plasma cutter, etc...) and buying the other components you had to buy and selling it with plans as a build your own kit?
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#9
12-22-2005, 09:06 AM
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Hi gang, thanks for the kind words. I've not really thought much about selling parts or plans. I actually copied the original design from another site somewhere and tweaked it a bit to suit my needs. I will check the drawings I used to build it and will post them if not too much trouble. The curved parts were cut using a bandsaw which I made by converting a Delta wood saw by adding a gearmotor drive to slow it down. I guess I could make up a kit over vacation and sell it - hmm - you got me thinking now. lol... Gotta pay for the wifey's presents somehow...
Anyway, happy holidays to all!
__________________
- "If ya can't be handsome, ya may as well be handy!"  HTP Invertig 201 Lincoln Power Mig 255C Lincoln SP125+ Thermal Dynamics Cutmaster 38
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#11
12-22-2005, 04:02 PM
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Quote:
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#12
12-22-2005, 06:58 PM
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Getting a flat belt to run true is very easy - the trick is to use a crowned pulley. Look at old machinery driven by flat belts and you will see. I bought a new 5" caster wheel from McM-C and it was way out of round, however. I trued it by chucking it in the lathe on a mandrel and using a 4" angle grinder and a 30 grit flex disc to sand off the highs. Got it real close.
__________________
- "If ya can't be handsome, ya may as well be handy!" HTP Invertig 201 Lincoln Power Mig 255C Lincoln SP125+ Thermal Dynamics Cutmaster 38
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#13
12-22-2005, 07:16 PM
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Quote:
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#15
12-23-2005, 10:16 PM
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hi atrain, the belt doesn't slip at all - the 1/2hp motor will stall first. I'll try to get a few closeups posted soon...
__________________
- "If ya can't be handsome, ya may as well be handy!" HTP Invertig 201 Lincoln Power Mig 255C Lincoln SP125+ Thermal Dynamics Cutmaster 38
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#18
12-24-2005, 08:08 PM
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thx sperkins - I haven't noticed any flexing. If I push hard, either the motor slows (.5hp) or the sander slides across the floor. It works well without pushing very hard.
__________________
- "If ya can't be handsome, ya may as well be handy!" HTP Invertig 201 Lincoln Power Mig 255C Lincoln SP125+ Thermal Dynamics Cutmaster 38
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#19
12-25-2005, 08:30 PM
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OK, here's the first round of prints of the components. The drawings are not perfect, as I had to do some minor tweaking and I did not keep track of my as-builts. I also made them simple as I knew what I was making...
 I used McM-Carr parts as follows: Idler wheel: 2472t55; floor wheels: 2315t64; flange brgs: 5967k51; belts similar to 4744a232. I made the front idlers from 2" alum bar stock, bored to fit ball brg 60355k89. Let me know if you need more info...  More to follow...
__________________
- "If ya can't be handsome, ya may as well be handy!" HTP Invertig 201 Lincoln Power Mig 255C Lincoln SP125+ Thermal Dynamics Cutmaster 38
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#20
12-25-2005, 08:31 PM
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Next batch... This will do it.
BTW, I made the motor base out of 3/16 alum. plate and just bolted it to the motor support bracket. After getting the pulleys, I had a used V-belt laying around and kinda clamped the motor assy in position and marked the holes for the pivot bolt. This was made primarily out of rectangular tube; 1x1, 1x2 and 1x3, all 1/8" wall. I tigged all of it I believe.
__________________
- "If ya can't be handsome, ya may as well be handy!" HTP Invertig 201 Lincoln Power Mig 255C Lincoln SP125+ Thermal Dynamics Cutmaster 38 Last edited by Garauld; 12-25-2005 at 08:37 PM.
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