Any bench grinder to recommend? - Router Forums
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post #1 of 30 (permalink) Old 09-15-2011, 12:39 PM Thread Starter
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Default Any bench grinder to recommend?

I want to buy a bench grinder for sharpening tools, making some small metal stuffs. What specs do I need to look at? I only know the size (6'') and horsepower. Is there any brand to recommend? or it just doesn't matter since most are the same and I can grab one from Harbor Freight?
Thank you for your suggestion.
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post #2 of 30 (permalink) Old 09-15-2011, 02:16 PM
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I want to buy a bench grinder for sharpening tools, making some small metal stuffs. What specs do I need to look at? I only know the size (6'') and horsepower. Is there any brand to recommend? or it just doesn't matter since most are the same and I can grab one from Harbor Freight?
Thank you for your suggestion.
I have an HF buffer and it works fine. I imagine their grinders are just as good.ver, if you want it for sharpening, you should take a look at any attachments you might want to see what you'd need to modify on the grinder (to accept the atachments).

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post #3 of 30 (permalink) Old 09-15-2011, 08:58 PM
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I have a small grinder I picked up at Sams ( of all places) use it a few times a year for sharpening lawnmower blades etc. and it is abou 7 years old now. it has a very smooth wheel which I like , need to use care and water or oil when working with metal ....Also PLEASE WEAR EYE,HEARING PROTECTION

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post #4 of 30 (permalink) Old 09-15-2011, 09:20 PM
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My own personal preference is unless it's under say 30 bucks, I don't buy electrical tools, that I may put a lot of time on at Harbor Frieght. I have a 5" sander from Harbor Frieght, and it's a few years old and it gets used alot. But personally, I don't think I'd buy a bench grinder, that I plan on using a lot, from HF. I would go to Home Depot or Lowes. I know some of there's are only a few steps better. Myself, I have an 8" Baldor grinder. Now this is a 600 dollar grinder, that I would have never bought myself. It was given to me, brand new. My father-in-law worked for a company who bought it by mistake (my father-in-law wanted a 6" one) and he worked for a huge company who thought it to be bothersome to ship it back, so they bought him a smaller one and told him he could do whatever he wanted with the big one. Well, I had my own business at the time, fixing metal cutting machines, so he gave it to me. This sucker will get passed down some generations, you can bank on that. It's about 15 years old now, and it looks and runs like new. Quiet as a mouse. I also have a 6 inch craftsman, that was also given to me, but it was used. I've had it for about 30 years, and I bet it was 10-15 years old when I got it. And it too still runs like a champ. I'ts set up for buffing.

I know you don't want to spend 600 bucks on a grinder, no way would I either. But if it were me, and I planned on using this tool, more then occasionally, I'd pay a little more for a little better grinder. Again, that's just me....
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post #5 of 30 (permalink) Old 09-15-2011, 09:49 PM
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Will, there is another option you should consider: instead of a grinder you might want to look at belt/disk sanders. You can find one that uses 4" wide belts and 6" disks for pretty reasonable prices. With one of these machines you can change the grit quickly and inexpensivly. Most of the things you would use a grinder for can be done on a belt/disk sander and the wider flat surfaces often speed up the job. A real big consideration is safety. I have seen too many grinding wheels explode(none on me) and I would much rather get hit with a piece of sand paper than a chunk of abrasive. The much lower cost of belts and disks will allow you to have a wider variety of grits for less money. Give it some thought.

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post #6 of 30 (permalink) Old 09-16-2011, 06:39 AM
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I have seen too many grinding wheels explode(none on me) and I would much rather get hit with a piece of sand paper than a chunk of abrasive.
That's one reason why we have a separate set of safety regulations governing the use of grinding wheels in the UK. They are potentially quite dangerous. One reason for the wheels failing is that if they get wet and the water can drain to the bottom of the wheel making it unbalanced. First time you switch on it can let go. It's why grionding wheels are supposed to be stored in a dry place flat on their sides

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post #7 of 30 (permalink) Old 09-16-2011, 10:15 AM
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Originally Posted by volunteers View Post
I want to buy a bench grinder for sharpening tools, making some small metal stuffs. What specs do I need to look at? I only know the size (6'') and horsepower. Is there any brand to recommend? or it just doesn't matter since most are the same and I can grab one from Harbor Freight?
Thank you for your suggestion.
Personally Will I couldn't live without a bench grinder, even if I didn't also work with metal. It's possibly one of those tools that you never miss if you've never had one, but once you have, it becomes a must. I recently gave away my 30 + year old 8" bench grinder still in perfect working order to buy an 8" one with built in light, I saw it advertised for just $99.00 which for Australia is very cheap. It checks out at a little over 1/2 hp. It always pays to be cautious and that's why one should run a new wheel for about ten minutes before use to make sure it's balanced and that it remains intact! In all these years of heavy use I've never had or known anyone who has had a wheel disintegrate.
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post #8 of 30 (permalink) Old 09-16-2011, 11:16 AM
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Harry, you are aware that most of my jobs have been in industrial settings. I have had the displeasure of being way too close when 7 wheels exploded. Three were white wheels on surface grinders, one was a pink wheel on a surface grinder and 3 were common gray wheels on 8" grinders. All but one of these incidents were caused by operator error; 3 of the people involved required medical treatment. By contrast I have only seen two sanding belts break, one on a 6" x 96" belt sander and the other on a 48" wide belt on a Time Saver sanding machine.(You can see one of these on the NYW) I have nothing against grinders, I own a 6" Craftsman pedestal grinder and an 8" diamond wheel grinder with a wet sump. I also own a 12 volt portable grinder/key cutting machine. Using common sense allows safe use of grinders, even when equiped with OSHA banned wire wheels. For people unfamiliar with grinders here are a couple of tips: never grind on the side of a grinding wheel, only the outer face. Make sure your guards are properly adjusted. Most important, never use a damaged wheel.

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post #9 of 30 (permalink) Old 09-16-2011, 11:17 AM
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Hi Harry

I like to use the belt sander ( 2" x 48" 2 hp ) the wheels are always out of round unlike the belt sander (belts 480 grit. to 40 grit.) I know I can true up the wheels but a real PITA job..bench grinder I have has a wire wheel and a buffer wheel that's it and it's a old sucker without any guards..

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Personally Will I couldn't live without a bench grinder, even if I didn't also work with metal. It's possibly one of those tools that you never miss if you've never had one, but once you have, it becomes a must. I recently gave away my 30 + year old 8" bench grinder still in perfect working order to buy an 8" one with built in light, I saw it advertised for just $99.00 which for Australia is very cheap. It checks out at a little over 1/2 hp. It always pays to be cautious and that's why one should run a new wheel for about ten minutes before use to make sure it's balanced and that it remains intact! In all these years of heavy use I've never had or known anyone who has had a wheel disintegrate.


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post #10 of 30 (permalink) Old 09-16-2011, 11:38 AM
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For people unfamiliar with grinders here are a couple of tips: never grind on the side of a grinding wheel, only the outer face. Make sure your guards are properly adjusted. Most important, never use a damaged wheel.
Mike

That's excellent advice. Might I add to that one other thing? Always wear goggles/safety spectacles/eye protection (over prescription spectacles if you wear them, too, as particles will weld themselves to your lenses or do even more damage).

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