Author Topic: Belt Grinder 72"x2" (Read 12962 times)

DaveH · « **on:** August 18, 2011, 09:51:19 AM »

They are sometimes referred to as "knife grinders"

The reason I am asking is I am thinking of making one, along the lines of the KMG one.

So anyone have one, make or build their own?

DaveH

loply · « **Reply #1 on:** August 18, 2011, 06:01:42 PM »

I built one, 72x2 w/ 3hp 3ph motor and a VFD, made mine tall and not so deep as most, with the motor under the desk. Consequently the desk space occupied is only about 60mm x 500mm.

At full speed it's unreal.

At slow speed it's really useful too.

Never used a bench grinder since, it's a zillion times better - faster, more flexible, better finish, easier, faster, etc etc

DaveH · « **Reply #2 on:** August 18, 2011, 06:16:59 PM »

loply,

I will probably have to stick to single phase 1.5HP, and use stepped pulleys.

I won't bother to ask if you like it.

Thanks

DaveH

johnbaz · « **Reply #3 on:** September 17, 2011, 03:50:50 PM »

Hello Dave

Your grinder looks like an Ally made one, do you go on British Blades by any chance as he makes and sells them on there..

They are fantastic bits of kit

Ally even put up plans for people who would rather have a go themselves

Cheers, John

plunger · « **Reply #4 on:** October 26, 2011, 04:16:31 PM »

I built one from plans off the internet. I used a 1.5 kw motor and run it off a vfd Very happy with it

DaveH · « **Reply #5 on:** October 26, 2011, 04:39:01 PM »

Plunger,
Hello and welcome to Madmodders

Do you remember where you got the plans from?

DaveH

Fergus OMore · « **Reply #6 on:** October 26, 2011, 04:51:27 PM »

Dave,
Watch out for offers in your local Aldi and Lidl stores. I've just picked up a belt sander and earlier a combined one with a 6" grinding disc on the other end. Both had 3 year waranties!
Tomorrow, Aldi have arc welding sets for £35, Reciprocating saws for £25 and 18V battery drills for £20. Ages ago, I bought 3 saws but running out of blades.

Cheers

F O'M

DaveH · « **Reply #7 on:** October 26, 2011, 05:01:05 PM »

Fergus,

urmmmm, thanks for the info, but I think the shipping or plane fare will be a real killer

DaveH

plunger · « **Reply #8 on:** October 26, 2011, 05:02:37 PM »

Dave I am computer challanged so I managed to lose all the stuff I downloaded but its based on the kmg These plans are freely available on the internet .I machined the wheels out of aluminium for the grinder but bought the motor pulleys which are cast iron.I made a set up where it uses a plattern and I used a caster wheel I bought at mica for R50.00 It is made of nylon and I just put some bearings in and trued it up.I just crowned the one aluminium wheel (80mm) and am suprized how well it tracks. I would like to try and cast some polyurethane around the 8 inch wheel and I need to find a different material for the platten as it does show signs of wear. Mind you It has taken some time to wear though.I am not into knife making this is for general shop use . With a new belt I reckon it chews through steel as fast as I can mill it. But then I am not very good at milling

DaveH · « **Reply #9 on:** October 26, 2011, 05:12:21 PM »

Eugene,

Thanks, some useful info there.

I just want it for general use.

Now all you have to do is show us some photo's please

DaveH

Fergus OMore · « **Reply #10 on:** October 26, 2011, 05:23:05 PM »

Apologies- thought that Kempton Park was a English Race Course. Watta mistaker to maker!

Try CNC Cookbook!

Pelallito · « **Reply #11 on:** November 20, 2011, 07:40:53 AM »

Hello,
Here are the plans for a KMG clone. I made one some time ago. I have a 3HP 3phase motor with a VFD. It is a great machine.
http://www.dfoggknives.com/PDF/GrinderPlans.pdf
I wrote about my build on Don Foggs site.
Good luck.
Fred

DaveH · « **Reply #12 on:** November 20, 2011, 08:26:28 AM »

Thanks Fred

DaveH

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