Grinder quickie

[WarnerConstCo.]

I needed a grinder in the worst kind of way. I knew I should get one for a long time, I just kept putting it off. I couldn't put it off any longer, I had to have one right away.

I scanned CL for a day, went through ebay, checked a few other places I know of. I even contemplated getting one from HF or the likes.

In the end, I just couldn't buy a cheap asian grinder.

I stopped in one of my favorite industrial surplus warehouses and what do I find?

http://equipmentresale.com/product.html?id=89669

I did not pay asking price, got a nice deal on a really dirty machine.

It's actually 1 1/2hp 10" Baldor grinder/buffer.  That is not a Baldor pedestal though.  It came with both lighted shields as well.

8 hours later:

 

[johnleve]

You do some great cleanup on these machines, perhaps you would be inclined to make a post about your process, or maybe you already have and I have just not seen it?

 

[sae]

Insanely jealous.

I've been looking for a Baldor for months now.

 

[Paul G]

You do some great cleanup on these machines, perhaps you would be inclined to make a post about your process, or maybe you already have and I have just not seen it?

I would find that very informative

 

[WarnerConstCo.]

You do some great cleanup on these machines, perhaps you would be inclined to make a post about your process, or maybe you already have and I have just not seen it?

I try to clean the best I can first.  I use a product called Totally Awesome, found at dollar general for one dollar in a concentrate.

It will clean some serious grime up.

To clean this up, I went at it with my needle scaler.  They need a good compressor behind them if you expect to get anything done.

My two stage Wayne ran for almost two hours straight holding right at 100 psi. 

I did a final clean with a knotted wire wheel on an angle grinder.

I just spray bombed this with 12 bucks worth of Ace brand spray paint (the fast drying enamel).

I clean bolts with a small pedestal buffer with two different wire wheels on it.

 

[WarnerConstCo.]

I just toss all the nuts, bolts and small parts in an old coffee can, no labeling anything.

I had to change the starter out with one for 240v, change the wiring connection on the grinder, run some new wires as well.

I still need to put the new lexan in the shields, install tool rests and weld up a quick mobile base tomorrow.

Then I can sharpen my lathe tools. [big grin]

 

[mouppe]

Good job. That looks like an excellent machine.

I wonder how the speed on the edge of those wheels compares to my 3600rpm 6" grinder? I often wish my rpm was lower as it is too easy to burn my tools when grinding them. What grit do you plan on using? I use a 40g wheel and a polishing wheel.

 

[WarnerConstCo.]

Good job. That looks like an excellent machine.

I wonder how the speed on the edge of those wheels compares to my 3600rpm 6" grinder? I often wish my rpm was lower as it is too easy to burn my tools when grinding them. What grit do you plan on using? I use a 40g wheel and a polishing wheel.

With a 10" wheel, rim speed will be 4712 feet per minute

80 to 100 for sharpening. 

I may just take one of the wheel covers off, add a bearing retainer (part from actual buffer) and run a big buffing wheel on one end.

 

[johnleve]

Thanks for the info that is a neat tool, never used one or knew such a thing existed.  I have been looking at sandblasting some old radiators but have a couple of other priorities before I can get a compressor that will run one efficiently.  The needle scaler is not going to work for that but it might be another tool to add after the sandblaster once I have a compressor with more cfm.

 

[wow]

Once again YOU ROCK!

I've been looking for a 10" Baldor around here for years but you just never see them. You've motivated me to go looking again...

 

[WarnerConstCo.]

Welded up a mobile base for this today.  Think I had 25 bucks in it, including steel casters and steel.

Rolls nice, runs nice, it would sharpen nice if the operator knew what he was doing.  [smile]

 

[Cheese]

Good job. That looks like an excellent machine.

I wonder how the speed on the edge of those wheels compares to my 3600rpm 6" grinder? I often wish my rpm was lower as it is too easy to burn my tools when grinding them. What grit do you plan on using? I use a 40g wheel and a polishing wheel.

Try a wheel grit in the 80-120 range. Also use a colored aluminum oxide wheel with a vitrified bond and not your typical gray colored wheel. The cooler running wheels are usually pink, red, white, purple or blue in color.

The picture below shows a pink aluminum oxide wheel, 80 grit, manufactured by CGW. Norton is also a very good choice. This type of wheel has a friable grain structure so they wear down more quickly, but because of that, they don't burn the tool as easily.

I only use the gray variety for crude projects, for instance, when I'm grinding angle iron.

[attachthumb=1]

 

[mouppe]

Good job. That looks like an excellent machine.

I wonder how the speed on the edge of those wheels compares to my 3600rpm 6" grinder? I often wish my rpm was lower as it is too easy to burn my tools when grinding them. What grit do you plan on using? I use a 40g wheel and a polishing wheel.

Try a wheel grit in the 80-120 range. Also use a colored aluminum oxide wheel with a vitrified bond and not your typical gray colored wheel. The cooler running wheels are usually pink, red, white, purple or blue in color.

The picture below shows a pink aluminum oxide wheel, 80 grit, manufactured by CGW. Norton is also a very good choice. This type of wheel has a friable grain structure so they wear down more quickly, but because of that, they don't burn the tool as easily.

I only use the gray variety for crude projects, for instance, when I'm grinding angle iron.

[attachthumb=1]

Thanks for the recommendation. I thought it was best to go for the coarsest wheel and then go to the diamond stone but I will try your suggestion. Always happy to try to improve my setup.

Are these the ones?

http://www.leevalley.com/en/Wood/page.aspx?p=32981&cat=1,43072,43080&ap=1

 

[Cheese]

Thanks for the recommendation. I thought it was best to go for the coarsest wheel and then go to the diamond stone but I will try your suggestion. Always happy to try to improve my setup.

Are these the ones?

http://www.leevalley.com/en/Wood/page.aspx?p=32981&cat=1,43072,43080&ap=1

You got it. I didn't know that Lee Valley had them, and I notice they're made in the USA. Got mine from the local Woodcraft store.

 

[johnmocha]

For folks who are interested in restoring old machines - take a look at OWWM.org  (Old woodworking machines).  It is a fantastic group and resource.  Everything from pouring babbitt bearings to polishing your tools.