This is a great way to grind a blade

Brock47 said:
That jig idea looks like something that might be adaptable to a belt grinder.
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Kind of reminds me of how Nathan hangs is parallelogram from the ceiling LOL.

Depending on how expensive the stone wheels are(and how long they last), it could save a ton of money on abrasives by doing the rough grind.

I'll have to say that I probably wouldn't be grinding with it spinning towards my face. I'd probably grind with it spinning away from me. If the wheel blew up it would still probably get you though. I wonder if there wouldn't be a way to stand to the side of it and grind... Probably wouldn't make a difference either.
 
To answer some questions, yes I will be installing a water drip, which will improve cooling and efficiency. The stones are cheap and last a long time, and they spin away from my face. Good ideas for jigs.

AA
 
When using water on the stone, be aware that when the wheel is stationary the water will settle to the bottom of the stone. When you start the wheel spinning, this creates an imbalance that can cause the wheel to explode.
Old time makers started their wheels very slowly, to gently spin the excess water from inside the stone wheel.
 
AndyAlm said:
To answer some questions, yes I will be installing a water drip, which will improve cooling and efficiency. The stones are cheap and last a long time, and they spin away from my face. Good ideas for jigs.

AA
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Where do you get the stone wheels and where do you get the machines to turn them?
 
Pretty sure Murray Carter uses this sort of rig a good bit. I just got another one of his books and it shows him hogging some serious metal with the same sort of rig the Japanese guy is using. Of course he relies on his 2x72 a lot also
 
McMaster Carr has a good selection of large grinding wheels. So does GeorgiaGrindingWheel.com. I built the machine from parts I either ordered online or sourced locally.
 
Haven't seen it responded to... This machine is moving WAY too fast, still. Watch those videos, such as Murray's, carefully. They're BIG wheels, turning pretty slowly comparatively. As it sits right now, this thing is uber-dangerous.
 
As I've stated multiple times, the speed is well below the manufacturer's rated maximum speed for the grinding wheel.
 
FWIW, I don't know the specific wheel AndyAlm is using, but I think a lot of you are thinking of the older style sandstone wheels that are known for coming apart at high speeds. This one appears to be for a pedestal grinder or the like.

The roll grinding shop I used to work in has much larger wheels that ran relatively fast as well. Not that these wheels never come apart / blow up, but as long as he's not getting crazy with it, he'll probably be ok.
 
Brock47 said:
Just wear some breathing protection! :)

I found this the other night. Same idea. Very cool. [video=youtube;iCtx8VYxUK4]https://www.youtube.com/watch?v=iCtx8VYxUK4[/video]
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Interesting video. Some of the purists may become apoplectic seeing him use a jig.:eek::D
 
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