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Surface grinder diamond dresser

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Cadillac

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#1
When I got my surface grinder it had two diamond dressers in the cabinet. One is a single point alittle worn but pointing straight up. The block has a angle on it which might be for dressing a specific angle??? Then the second is a cluster of diamond on one rod and again perpendicular or the same able as the other.
I've seen videos on dressing the wheel and every one I can remember had the point at a 15* angle from perpendicular and slightly behind center. So can anyone give me some info on these types that I have? Just curious?
image.jpeg image.jpeg
 

benmychree

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#2
The reason for the 15 deg. angle is so the dresser is not blunted by repeated dressings, you are supposed to rotate the diamond in the holder occasionally to keep a sharp edge presented to the grinding wheel.
 

Cadillac

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#3
The reason for the 15 deg. angle is so the dresser is not blunted by repeated dressings, you are supposed to rotate the diamond in the holder occasionally to keep a sharp edge presented to the grinding wheel.
Yes thanks I had known about rotating the diamond. I was just curious of the included angle on both blocks in the picture?
 

Cadillac

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#5
The only thing I can come up with is to dress the side of wheel or to create angles on peripheral?
 

Bob Korves

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#6
I see no real purpose for the extra angles. Effort was put into making them that way, and I confess to having no idea what they might be for. Your description of the normal setup was spot on. I have seen recommended angles from vertical for the diamond between 10 to 15 degrees (so I use 12.5 degrees... 8^)
 

JohnG

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#7
Cadillacs idea that the added angle is used to side dress a wheel makes sense to me. This is the setup I've used to side dress a dish wheel.



grinder a.jpg

I feed the wheel up and down to get a face perpendicular to the chuck. I couldn't find info on the orientation of the dressing point for this application. I tried this, and it worked.
 

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Bob Korves

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#8
An angled bracket does not make an angled wheel face. The diamond has to be moved at an angle to to the wheel to produce that feature, a task usually handled by an angle dresser. The pictured diamond holders are not angle dressers. The angles could be for clearance between wheel and dressing tool, but I have never found that to be a problem.
Also here are some photos of various angle grinding tooling. The first two are NOT angle dressers.
https://www.bing.com/images/search?...t=angle+dresser+for+surface+grinder&FORM=IGRE
 

Cadillac

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#9
Surprised I haven't seen that video yet I thought I've seen all Stephan's videos. I've learned a lot from him and has lead me to push my skills. I love when he needs something like a angled dresser. Bam boo wow shabang a beautiful tool steel linear slide diamond dresser surface ground on all finishes,etched. He's definitely a professional and very talented!
 

kd4gij

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#10
JohnG is right, the angle is for side dressing the wheel.
 

Bob Korves

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#11
OK, I can see using it for side dressing the wheel, by moving the spindle up and down, but not for angle grinding or radius dressing the side of the wheel, at least not with only what we are looking at to do it with.
 

derf

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#12
The angles have a purpose, it's just not what you think. Typically the wheel is dressed with the diamond directly under the centerline of the spindle. This requires the wheel to be several inches above the magnet. If you have a thinner work piece and you want to touch up the wheel in the middle of the job, you simply move the wheel off to the side and use the dresser on the angled side to dress the wheel from off center of the spindle line. This uses the longitude feed instead of the vertical feed to make a radical change in height.
With the wheel stopped, the diamond is moved to touch the wheel and the cross feed is backed out. Then the spindle is started and a pass is taken, with maybe one more using the down feed no more than .010". This gives you a clean wheel and still close proximity to the work piece.
 

Cadillac

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#13
Derf I think you’ve nailed it. I can see what your describing. Thanks to all for your responses.
 
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