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Dressing a wheel

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Dressing a wheel

#1

Dressing a wheel

Jeremy Osner

>Tonight I put my new Norton grinding wheel on the grinder, and used my new diamond dressing tool on it. Just wondering, how do you tell when the wheel is properly dressed? I used the probably-incorrect-and-dangerous method of touching my thumb lightly to the spinning wheel to see if it felt flat; I couldn't think of any other way to know.

Also I took a practice spin at grinding a bevel, regrinding the one that I had messed up last week. Still not quite there yet -- I figured out after about 5 minutes that the tool rest that came with the grinder does not sit parallel to the face of the wheel, is why the bevel comes out so dramatically out of true. So, looks like I will go by Joel's shop this week and buy that LV tool rest -- it is not too expensive and I'd like to move ahead.

Re: Dressing a wheel

#2

Re: Dressing a wheel

John Stegall in Kerrville Tx (visiting France)

>I think a flat stick of wood might be a safer bet to test the wheel with, but that is just a guess. If your tool rest were true to the wheel, you could get a pretty good idea by turning it by hand and watching the gap, but that is another off the top of my head idea.

Re: Dressing a wheel

#3

Bevel and tool rest

Ed Mulligan, Cape Cod

>Jeremy -

Look where the tool rest attaches to the grinder. There may be paint, casting sand or other junk that's putting the rest out of square. A few strokes with a file will remove any unwanted stuff.

If the bevel is not developing uniformly, in other words one side is being ground more than the other, rotate the tool while keeping it flat on the rest so the side with less grinding is higher and touches the wheel first. Grind a bit, examine, and adjust the presentation angle if needed until you have a uniform bevel.

This is a common situation with grinders and will occur even with a better tool rest. The tool rest might be off as you suspect, the wheel working surface might be off - not perpendicular to the radius, or the tool might be lopsided - a common situation especially with narrow bench chisels.

Ed

Re: Dressing a wheel

#4

Jack Guzman from Maine

LV toolrest

Jack Guzman from Maine

>Jeremy, I have the LV toolrest and it's completely adjustable in all directions and stable. You'll be happy with it.As to the dresser,I believe I read that you only need to touch the stone briefly with it to dress it properly.I haven't gotten mine yet however so I'm only repeating what I read.---Jack

Re: Dressing a wheel

#5

Dressing vs. Truing

Don Thompson - Cutler Ridge, Florida

>I think that you may be mixing up "dressing" with "truing". I was told that dressing means to clean up & deglaze the surface, and that truing means to get the wheel round and concentric with the axis (so the tool does not bump up and down when rested on the surface of the spinning wheel).

Re: Dressing a wheel

#6

Like this

jim reed @ Tallahassee

>I find that the diamond tools work best. Mine is a flat bar with diamond chips which sits on the end of a handle. It is easy to move the bar back and forth to expose a good cutting surface and remove grooves in the wheel. Don't overdo it or you will grind your wheel into powder. Here are a few safety tips:

1)Wear eye protection, hearing protection, and a breathing device. Dressing the wheel creates lots of BAD dust.

2)Don't overtighten your wheel.

3)Don't work too long (hours) or the wheel will heat up and could explode.

Good luck and safe woodworking!

Re: Dressing a wheel

#7

alternate view of LV tool rest

bill tindall

>I had one and got rid of it because-

It is flimsy and hence wiggly. I didn't find it to be a stable rest for accurate grinding.

It's aluminium. Steel does not slide well on aluminium, so again there was a control issue.

The Wolverine (Oneway) rest is stable, large and steel slides easily on it. For me it has made tool grinding much easier than ever before. I ordered an extra rest for it which I keep at my plane and chisel bevel angle. The second I adjust as needed for other jobs. It also makes sharpening lathe tools easier.

PS I made a nice rest out of a piece of 1/4" plywood. It worked very well until one day during serious grinding the spraks from the wheel set it afire.

Re: Dressing a wheel

#8

Calico is nice for the traditional types

Bill Houghton, Sebastopol, CA

>polka dots for the more modern sorts.

Re: Dressing a wheel

#9

P@wer grinder or handcranker?

Todd O. Cronkhite Maine Native in FL. Exile :~(

>Jermey,

I use a star wheel for both truing and dressing(deglazing)a stone on my handcrankers. This makes the face of the stone square. Seems to me that I just read a few weeks ago ago where it was recommended to dress the stones so that they are higher in the center than the edges. Somebody correct me if I'm wrong.

One my handcrankers I made supports to hold a 5/8 dowel to act as a tool rest. I than grip the blade/chisel in my hand so as I can use my index/pointer/(the one beside my thumb) finger as a guide. I start from the right and move left, so the dowel has to be longer to the left to make sure there is room for my hand. Works great and I get good straight, square bevels.

If your using a p@wer grinder all bets are off. If I was you I'd fire that rascal as I did mine.

Todd O.

Re: Dressing a wheel

#10

Me too...

Scott Burr in Ben Lomond CA

>I have one and don't like it. Because of the aluminum it's made out of, the blade holder galls up with the base and has very sticky movement. They don't slide smoothly together well at all.

BTW...I like my wheels in tight fuzzy sweaters and leather skirts. ;^)

Re: Dressing a wheel

#11

Re: Me too...

Jeremy Osner

>Well... I got the tool rest today so I guess soon I will know which side I am on...

Re: Dressing a wheel

#12

Jack Guzman from Maine

Galling--Attn: Rob Lee

Jack Guzman from Maine

>That is a minor problem I have been working on. I tried a little wax and it made thing worse.I'm going to experiment with silicone.I'll post if I find a solution. Meanwhile,has anyone else ever solved this problem? I still like the way it works. It's only a minor annoyance for me.It doesn't affect the result.---Jack

Re: Dressing a wheel

#13

I wouldn't call it a little one...

Scott Burr in Ben Lomond CA

>It's a big problem IMHO. I think it's the grit of the wheel tearing up the aluminum then they gaul together. This becomes a sticky mess that makes it near impossible to slide the holder with out sticking. I have tried wax also and Teflon spray nothing seems to help. I'll be trying some Teflon or UHMW plastic tape in the future maybe. I'll probably replace it with better jig.

Re: Dressing a wheel

#15

Oneway rest *LINK*

Pam Niedermayer - Austin, TX

>Bill, is this the item linked to below?

Thanks,

Pam


Oneway grinding jig

Re: Dressing a wheel

#16

Re: I'd like to know what you...

Jeremy Osner

>I'll let you know....

Re: Dressing a wheel

#17

Thanks, Bill......

Frank Mutchler in Colorado Springs

>I have the LV, never used it (still in the box), and soon it will be on the bay. I've looked around and decided on the One Way system. Ordered it today. It was their demo videos that sold me. The rest is solid and does what it's supposed to. A grinder is such an asset to woodworking, if it works properly, that however you get there it's well worth whatever time/money you invest.

Re: Dressing a wheel

#18

That would be it

Bob Hackett

>

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