Laser Guided Paper Wheel Sharpening

Yes, I hold the blade flat and horizontal for all sharpening. I bought a cheap rotating round protractor and cut out a circle of paper about 1/2 inch less than the diameter of the grit wheel, and also cut out a hole bigger than the washer holding the wheel on the shaft. I then marked off the degrees I wanted and drew straight lines from the edge to the center hole. Placed this template on the wheel and made "tic" marks on outer and inner edge of the wheel. I then extended the lines from the outer edge to the inner edge for the marked degrees I wanted. Remounted the wheel and lined the 90* line up at the top dead center and then took a straight edge (small carpenter's square) and lined it all up on top of the grinder motor and make a permanent marker line across the motor for my reference point. That way, I have a reference point for the slotted wheel at the same angle as the grit wheel. I hope you can understand all this. It was easier to do than to explain how. :D Good luck!

Blessings,

Omar
 
I still use this, works great!

I marked the wheel by doing the math. On an 8 in. wheel, every 5 deg. is .349 inches. So I set a caliper and marked it that way. Then, using the laser I made corresponding marks on the grinder, so I have a reference with or without the laser.

Let me know if it works for you!
 
If I can get my camera to cooperate I will try to get some pictures today sometime.

Blessings,

Omar
 
When I was in the USAF, we had a cartoon under the glass on our operations counter-

"Measure it with a micrometer. Mark it with a paintbrush. Cut it with an axe."

I can see using some type of mark to start with, but the learning curve with paper wheels is so short, that you'll get the hang of it quickly. Just how steady and accurate can you hold a blade anyway? Steady and accurate enough (with a little experience) is the answer.
 
Bernoulli said:
When I was in the USAF, we had a cartoon under the glass on our operations counter-

"Measure it with a micrometer. Mark it with a paintbrush. Cut it with an axe."

I can see using some type of mark to start with, but the learning curve with paper wheels is so short, that you'll get the hang of it quickly. Just how steady and accurate can you hold a blade anyway? Steady and accurate enough (with a little experience) is the answer.
Click to expand...

Can't argue with that... like I said in my original post... you can certainly get knives plenty sharp without this.
 
I use a laser on my belt grinder to provide a reference line for grinding. It is mounted on a camera tripod with a level for setting accuracy. I will try to post a picture later. The laser hits the wheel at an angle and that angle is reflected if it hits the blade.

BTW...electric motors running at 1750 rpm are used in washing machines and other appliances. Check appliance repair stores for used motors. Also, check out electric motor repair shops, usually listed in the yellow pages (remember those :) )
 
He is a set up I made about 4 years ago. I have since added the laser. The guard over the belt has the degrees marked for the laser. Just rotate the laser to what angle you want. It takes seconds. You can adjust the speed by the pulley sizes you install.
Ron
P1000021-vi.jpg

P1000020-vi.jpg
 
What laser are you using here. Brand and model?


rpttrsn said:
He is a set up I made about 4 years ago. I have since added the laser. The guard over the belt has the degrees marked for the laser. Just rotate the laser to what angle you want. It takes seconds. You can adjust the speed by the pulley sizes you install.

Ron
P1000021-vi.jpg

P1000020-vi.jpg
Click to expand...
 
cbwx34 said:
Looks like mine... It's a Black and Decker BDL220S
Click to expand...

I am obviously missing something here. This laser shoots a straight line like you can see in the pictures below. Aiming it down like in the picture above (using it with the grinder) would seem to produce a dot on top of the grinder. Seems that to get a line spanning across the grinder the laser would need to be mounted to the side? What am I missing?


51HZpBzZFeL._SX425_.jpg
 
Point the laser down and turn it 90 degrees.... it's now a line running across. ( If it's not against a wall it goes both ways).
 
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