Meet My Mistress: Belt Driven GIB/EERF

Joined
Jun 27, 2006
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Here is the one who competes with my wife several times a week. She is the reason my wife goes to bed alone some times. She is the one who gets much of my attention and most of my cash.

She's loud, fast, and doesn't care who she hurts. Yeah, I know she's heavy but I like em that way ;)

This is still a work in progress and I turned it on for the first time last night after I finished wiring my shop (read: garage) for 220v. I don't have it wired up to a switch yet so am forced to plug/unplug. The 220 switch should come soon.

For those of you who are astute, you'll notice that this is a GIB/EERF grinder from PolarBearForge that is belt driven. To my knowledge this is the first one of its kind.

I chose to run it this way b/c a friend gave me the 2HP pool pump. The mounting system on the pool pump wouldn't work so I had to do some backyard engineering to get it to work. She's an ugly broad!

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It is set up left handed so that my CCW motor will run it in the right direction without taking up extra table space. I like it behind the grinder rather than beside it.

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You will notice that the drive rod is all thread. Had already gotten the flange bearings and step pulleys in 5/8" because I expected to have a 5/8" drive wheel. But late in the game I was able to buy a drive wheel for the 2x42 Craftsman here for $15. It is only 1/2" and has no keyway so I got sleeves for the pulley and bearings to go from 5/8 to 1/2 and used the all thread to run the much cheaper drive wheel. It works smooth for now. I might have problems in the future with it but i'll cross that road if it happens. I can always switch back to a 5/8" rod and wheel if I need to.

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Thanks for looking,
Jason
 
Interesting solution:thumbup: I love my GIB and can't wait to set it up again, it get to my new home this weekend, and I should have it set up and ready to run again by next weekend. I have to build a rolling table to mount it on first:o because the bench here is about a foot too tall and is built into the garage so I can't alter it:(
 
Kinda crazy, but you gotta do what you gotta do, right? And having a new grinder is a powerful incentive to get 'er done. Congrats on the new grinder. It ought to look good with a new blaze belt on it... grinding some blaze orange G10.
 
I'm a sucker for Orange!

If you look at the 2nd picture you'll see my very well used 2x42 with a 1/2 HP 1725rpm motor behind it. That works like a charm! I am just dumbfounded to have this new one!
 
What a sexy b*tch. Friendly advice: be sure to balance your time between her and the lonely wife....first hand experience dictates.
Personally? I'd take the sparks in the garage over the sparks in the bedroom, but that's just me.
 
Look close at that one guys, it has two different slots for his tool arm to go in. One higher and one a little lower. Love that. Great grinder. Was thinking of buying another KMG, but might be fun to make my own and steal everyone else's cool ideas.
-M
 
Very cool, way to go. I wouldn't be surprised if that all thread holds up for years. I also wouldn't be surprised if you bend the crap out of that shaft the first time you get real tight on either belt. I think it is comparable to a soft 3/8-7/16" shaft after the threads are cut.

I like your grinder a lot, but I would be looking to upgrade the shaft sooner rather than later. Bending the shaft at high speed could provide undesirable results.

Erik
 
This grinder was designed for the toolrest to be on an independent Tooling arm.
PS Looks great, I love the ingenuity.
GIB4.jpg
 
Thanks everyone. It took me 5 months to build and i'm still tweeking it.

Eric, I agree with you that the drill rod might not be the best candidate. I would like to keep the current drive wheel rather than drop another $60. I think I might look locally for an 8" x 1/2" bolt to replace it with.
 
That's exactly what I did. Got rid of the drill rod and used an 8" 1/2" bolt. No problems yet. I'm keeping my fingers crossed.
 
Bump ! ! !

Is there another thread or an updated design out there.

What I am hoping to find is a set of CAD drawings I can give to a water-jet cutter.

Thanks,
Steve
 
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