Po' Boy's Blanchard Grinder

[JoeH]

I really appreciate your comments about compressed air. I use a vacuum and brush and sometimes magnets for steel. I hadn't thought about putting down newsprint with a little oil to catch the worst of it. Anything that makes clean up easier is good to know.

[JoeH]

Wondered if this was the grinding wheel you used? https://www.amazon.com/DEWALT-DW4961...ustomerReviews

[Crusty]

This is the one that I used. It's advertised for metal grinding.

[JoeH]

Thanks, Crusty. What RPM were you running?

[Crusty]

I used oil wet blue jean rags for a shield but my plans include using an old shower curtain underneath to stop any grit that might get through the denim. If you wipe the oil from all surfaces before you begin so that any grit won't stick then a shop vac will get nearly all of it.

A big retrieval magnet is a frequently used item in my shop. The first time I used it hanging on paracord to swing over the floor in my gunsmithing area I found enough parts to pay for the magnet.

[Philco]

I used this same method several years ago on some hardened pins that needed to all be ground the same height. I used a shoulder bolt for the arbor. Here&#8 217;s a link to the article at Poor mans surface grinder on the Hobby machinist website
Thread starterPhilco Start dateNov 24, 2013
P
Philco
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#1
I am making a fixture to rebuild a component inside an automatic transmission. While making the fixture, I had to grind off some hardened steel pins to an exact height. I grabbed a tool that I had made by "accident"for another project an thought someone else may benefit from it.
Take a 3/4 diameter shoulder bolt an cut the head off. This leaves you with a arbor to mount a grinding wheel on. Run the machine at the highest RPM an move x & y. Take light cuts an be sure to cover up the machine to protect from the dust.
I hope this tool will help some one else
Philco

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Charley Davidson
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You're one of the smartest guys I know & thrifty, Great job & idea.


xalky
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I love it. I've been thinking about how to implement something similar. I never thought about using a hand grinding wheel. I just don't have the room in my garage right now for a surface grinder, I wouldn't use it much anyways. My original thought was to use a right angle head with a surface grinding wheel mounted to it, but I don't have right angle attachment for my bridgeport....yet:lmao:
GK1918
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Philco, another step further, check out some of the stones they use for marble and such, many styles and grits. Thats what I use on my
shaper ''surface grinder attachment".
xalky
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GK1918 said:

Philco, another step further, check out some of the stones they use for marble and such, many styles and grits. Thats what I use on my
shaper ''surface grinder attachment".

Link please!
C
Charley Davidson
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#6
Phil, You should just come & buy one of my grinders, either the surface grinder or the DoAll T&C grinder. I'll keep the other.
george wilson
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I'd really hate to do any grinding on my milling machine. Be sure to completely cover everything with plastic ,like a garbage bag. I suggest masking tape or duct tape to hold it in place. When finished, CAREFULLY remove the plastic, folding it in on itself,making slow movements to not stir up dust. An extra wipe down afterwards with an oily cloth would also be good.
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If you ran a diamond across the face and O.D of the wheel... I'm sure it would work much better. Why not just use carbide on the hardened pins? As mentioned, I would not want to grind on my mill.


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12-10-13, 08:19 AMgeorge wilson
Re: Poor mans surface grinder

I'd really hate to do any grinding on my milling machine. Be sure to completely cover everything with plastic ,like a garbage bag. I suggest masking tape or duct tape to hold it in place. When finished, CAREFULLY remove the plastic, folding it in on itself,making slow movements to not stir up dust. An extra wipe down afterwards with an oily cloth would also be good.


12-10-13, 12:56 PMjamie76x
Re: Poor mans surface grinder

If you ran a diamond across the face and O.D of the wheel... I'm sure it would work much better. Why not just use carbide on the hardened pins? As mentioned, I would not want to grind on my mill.


I totally agree with both statements about grinding on the machine. I stated that in my OP. I don't make this a habit of using this set up on my machine. I only use this method in an " emergency" type of set up. In fact I had used a hand grinder to grind the pins down to within a few thousands of the desired height.The pins all had to be the same height for the project to work out as I had planned. I couldn't see sending this part out to a grinding shop for a few thousands. I didn't show my true set up in the picture, I actually had a drape of oily rags hanging down close to the 'out- spray' which catches any grinding dust produced. Jamie, I used this method because I could have better control of the outcome by raising the knee of the mill by 1/2 thousands at a time.
If there are any newbies reading this post, be aware of what damage you can do to a machine by using it as a grinder. If you do use this method, be sure to take George's advice & cover up good.
Phil


pjf134
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Do not use diamond to cut steel as it would tear up the diamond. I seen a shop guy take a $500 diamond blade and cut some steel angles and the blade got wasted in a matter of minutes.
Paul
The_Crusher
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Zip cut wheel on an angle grinder to cut them close and then put it on the mill to finish height with carbide. (Duct tape around each one as to not nick the surface)
pestilence
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pjf134 said:
Do not use diamond to cut steel as it would tear up the diamond. I seen a shop guy take a $500 diamond blade and cut some steel angles and the blade got wasted in a matter of minutes.
Paul
He meant use a diamond to dress the grinding wheel. You could throw a diamond in your vice to dress the wheel perfectly true to the spindle.
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[jdurand]

For way-guards I've started using "pan liner" intended for going under the shower bases. It's thick vinyl, stays flexible, and isn't bothered by oil. Find it at your home improvement store.

You can see the gray liner between the table and column of my old mill

[Crusty]

Now that's an interesting material. I was already thinking along the lines of finding a scrapped waterbed that I could cut thick vinyl panels from.

[rebuilder1954]

+1 on the shower pan material

https://www.lowes.com/pd/Oatey-Showe...-Liner/3127069

Works great, very cost effective.

[suther51]

My thought on shielding for where it is missing on my mill was epdm, but I realised from reading this thread that I need to do some oil testing....