[4]

Winner Planer Blade Grinder

[3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!
Status
Not open for further replies.
F

f350ca

Guest - Please Register!
Guest - Please Register!
I need a better system for sharpening the thickness and jointer blades. And a project.

Started with the fixture that will hold the blade. In order to make that we needed to make a clamp system for the shaper.

Almost at the limit of the shaper cutting 16 inches.

k7V7JBpM8IV85vjWd3ZJISnhXB-bbYNJ8A9DARUD4aZvD5wvS-Ub84a-sJOiq9ji_fGMe_Cn52YNQYQ6w=w1695-h1271-no.jpg


Greg

k7V7JBpM8IV85vjWd3ZJISnhXB-bbYNJ8A9DARUD4aZvD5wvS-Ub84a-sJOiq9ji_fGMe_Cn52YNQYQ6w=w1695-h1271-no.jpg


k7V7JBpM8IV85vjWd3ZJISnhXB-bbYNJ8A9DARUD4aZvD5wvS-Ub84a-sJOiq9ji_fGMe_Cn52YNQYQ6w=w1695-h1271-no.jpg


k7V7JBpM8IV85vjWd3ZJISnhXB-bbYNJ8A9DARUD4aZvD5wvS-Ub84a-sJOiq9ji_fGMe_Cn52YNQYQ6w=w1695-h1271-no.jpg


k7V7JBpM8IV85vjWd3ZJISnhXB-bbYNJ8A9DARUD4aZvD5wvS-Ub84a-sJOiq9ji_fGMe_Cn52YNQYQ6w=w1695-h1271-no.jpg
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
I've been using a Delta grinder Jack, does a good job, but a bear to set up, and it uses the side of a cup wheel to give a straight grind, I prefer a hollow grind to hone.

Finished roughing the blade holder on the shaper. Had to tighten up the belts, they were slipping on a .05 doc and .014 feed. Nice big curls but my stroke speed must have been too low, they wouldn't turn blue.

Mounted it in the mill for a couple of light passes to straighten out any warp from stress relief, and chamfer the one edge to clear the grinding wheel.

C2wi2gCiginWofc_NjaDYzlOjbK4RAJjajr8H3U3oHzvQxOac1inzpsMcZYrUyKpvi4nV5tDojnQZmp1O=w1695-h1271-no.jpg


Greg

C2wi2gCiginWofc_NjaDYzlOjbK4RAJjajr8H3U3oHzvQxOac1inzpsMcZYrUyKpvi4nV5tDojnQZmp1O=w1695-h1271-no.jpg


C2wi2gCiginWofc_NjaDYzlOjbK4RAJjajr8H3U3oHzvQxOac1inzpsMcZYrUyKpvi4nV5tDojnQZmp1O=w1695-h1271-no.jpg


C2wi2gCiginWofc_NjaDYzlOjbK4RAJjajr8H3U3oHzvQxOac1inzpsMcZYrUyKpvi4nV5tDojnQZmp1O=w1695-h1271-no.jpg


C2wi2gCiginWofc_NjaDYzlOjbK4RAJjajr8H3U3oHzvQxOac1inzpsMcZYrUyKpvi4nV5tDojnQZmp1O=w1695-h1271-no.jpg
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Have the housing made for the linear bearings the assembly will slide on. Tried with some mastery steel I had but couldn't get the bore cut without tearing, hence couldn't hold the tolerances I needed to preload the bearings. Went with aluminum, cut nice the bore had to be 1.563 +.0005 - .0000. Not bad for holding it in a 16 inch 4 jaw, was too long for the small lathe.

za3dnB-gmUSaIbegLDPBC-Fx_cF2ZBlEA51EAUSHBqX_QeKwWuNDaPq7aoU15fqo0v3kTs-ak2vG-dVTH=w1695-h1271-no.jpg



Greg

za3dnB-gmUSaIbegLDPBC-Fx_cF2ZBlEA51EAUSHBqX_QeKwWuNDaPq7aoU15fqo0v3kTs-ak2vG-dVTH=w1695-h1271-no.jpg


za3dnB-gmUSaIbegLDPBC-Fx_cF2ZBlEA51EAUSHBqX_QeKwWuNDaPq7aoU15fqo0v3kTs-ak2vG-dVTH=w1695-h1271-no.jpg


za3dnB-gmUSaIbegLDPBC-Fx_cF2ZBlEA51EAUSHBqX_QeKwWuNDaPq7aoU15fqo0v3kTs-ak2vG-dVTH=w1695-h1271-no.jpg


za3dnB-gmUSaIbegLDPBC-Fx_cF2ZBlEA51EAUSHBqX_QeKwWuNDaPq7aoU15fqo0v3kTs-ak2vG-dVTH=w1695-h1271-no.jpg


za3dnB-gmUSaIbegLDPBC-Fx_cF2ZBlEA51EAUSHBqX_QeKwWuNDaPq7aoU15fqo0v3kTs-ak2vG-dVTH=w1695-h1271-no.jpg
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Made the arms? that attach the blade clamp to the linear bearing housing. Im measuring a 2 thou dip in the back fence, this means nothing as the blade will be set forward with adjusting screws. The clamp runs 3 thou high in the middle though, surfaces must not be parallel. Oh for a larger surface grinder to correct this. In reality flexing a 15 inch planer blade a few thou when grinding would make very little difference in the straightens of the cutting edge, and its cutting wood thats going to move around on its own free will. Guarantied this will make them a LOT straighter than Im getting them now.

kZTD3E0mGro4gFQlpWscU1FbJjZ-RnfhDWFY-yZjWWQO3EaUYq31bpRZoKgPMBsoJxK6FGTkm2X-1V9ph=w1695-h1271-no.jpg


zP0--tEfJihxBCRUEBO9zy-rrWBNK0cRsQiRbLFwETfXOlef2mrG6skt17gNHWuWoffasq17mtcnvmkqv=w1695-h1271-no.jpg


Greg

kZTD3E0mGro4gFQlpWscU1FbJjZ-RnfhDWFY-yZjWWQO3EaUYq31bpRZoKgPMBsoJxK6FGTkm2X-1V9ph=w1695-h1271-no.jpg


zP0--tEfJihxBCRUEBO9zy-rrWBNK0cRsQiRbLFwETfXOlef2mrG6skt17gNHWuWoffasq17mtcnvmkqv=w1695-h1271-no.jpg


kZTD3E0mGro4gFQlpWscU1FbJjZ-RnfhDWFY-yZjWWQO3EaUYq31bpRZoKgPMBsoJxK6FGTkm2X-1V9ph=w1695-h1271-no.jpg


zP0--tEfJihxBCRUEBO9zy-rrWBNK0cRsQiRbLFwETfXOlef2mrG6skt17gNHWuWoffasq17mtcnvmkqv=w1695-h1271-no.jpg


kZTD3E0mGro4gFQlpWscU1FbJjZ-RnfhDWFY-yZjWWQO3EaUYq31bpRZoKgPMBsoJxK6FGTkm2X-1V9ph=w1695-h1271-no.jpg


zP0--tEfJihxBCRUEBO9zy-rrWBNK0cRsQiRbLFwETfXOlef2mrG6skt17gNHWuWoffasq17mtcnvmkqv=w1695-h1271-no.jpg


kZTD3E0mGro4gFQlpWscU1FbJjZ-RnfhDWFY-yZjWWQO3EaUYq31bpRZoKgPMBsoJxK6FGTkm2X-1V9ph=w1695-h1271-no.jpg


kZTD3E0mGro4gFQlpWscU1FbJjZ-RnfhDWFY-yZjWWQO3EaUYq31bpRZoKgPMBsoJxK6FGTkm2X-1V9ph=w1695-h1271-no.jpg


zP0--tEfJihxBCRUEBO9zy-rrWBNK0cRsQiRbLFwETfXOlef2mrG6skt17gNHWuWoffasq17mtcnvmkqv=w1695-h1271-no.jpg


zP0--tEfJihxBCRUEBO9zy-rrWBNK0cRsQiRbLFwETfXOlef2mrG6skt17gNHWuWoffasq17mtcnvmkqv=w1695-h1271-no.jpg
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Have the clamps, back plate and adjusters that position the blade made.

rv0Dc-_1_SsQUz0UKbI8DDThOxJA-HFExPXnBLmDYErEzD-Z1gLgY7BGs5gISpkcsYSXCTQF_U21oNIHR=w1695-h1271-no.jpg


Ground the clamps and back plate to make them shiny, and just cause the surface grinder was sitting there.

Greg

rv0Dc-_1_SsQUz0UKbI8DDThOxJA-HFExPXnBLmDYErEzD-Z1gLgY7BGs5gISpkcsYSXCTQF_U21oNIHR=w1695-h1271-no.jpg


rv0Dc-_1_SsQUz0UKbI8DDThOxJA-HFExPXnBLmDYErEzD-Z1gLgY7BGs5gISpkcsYSXCTQF_U21oNIHR=w1695-h1271-no.jpg


rv0Dc-_1_SsQUz0UKbI8DDThOxJA-HFExPXnBLmDYErEzD-Z1gLgY7BGs5gISpkcsYSXCTQF_U21oNIHR=w1695-h1271-no.jpg


rv0Dc-_1_SsQUz0UKbI8DDThOxJA-HFExPXnBLmDYErEzD-Z1gLgY7BGs5gISpkcsYSXCTQF_U21oNIHR=w1695-h1271-no.jpg


rv0Dc-_1_SsQUz0UKbI8DDThOxJA-HFExPXnBLmDYErEzD-Z1gLgY7BGs5gISpkcsYSXCTQF_U21oNIHR=w1695-h1271-no.jpg
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Rather than make a grinding head and have to deal with the bulk of a spate motor I bought a Chinese 6 inch grinder. The washers for the wheels were terrible, had to make proper ones to get it running true, but the motor I must say is very well balanced.

7S6NnDl1l-D4JxwWrvMtS_mZD178r_3XP4EydD_qVvt8ypAWjwXnLaszZEwm3mK1tdqvlC-2c7MMpHKnp=w1632-h1224-no.jpg


Making the parts to adjust the depth of cut.

WD0S_7iqrNS25IL699pOX-HTQIL_JPuwZZnj5Pao0n3c0P9Aj2HOZyCXkTvbeqtv4PdA3WukfjCWbla12=w1632-h1224-no.jpg


Greg
 

brino

Active User
H-M Supporter - Gold Member ($25)
Joined
Jan 2, 2014
Messages
3,761
Nice one Greg!
I did not understand how you were doing the height adjustment until I saw the latest post.
Great simple mechanism.

Thanks for sharing it!

-brino
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Finished

Used cold blueing on the blade clamp parts and painted the chassis. Have attached a line to feed air between the two linear bearings, hopefully the positive pressure will keep grit out.

0LxIGsj_3YwttLTBuuWNNodT1Mft4Jj4gs4MuTom9yxQNnCM_OpMrq6Y9Zs4sw7pOoXVZrBHBVEW3E7zN=w1632-h1224-no.jpg

Thanks for watching.
Greg
 

FOMOGO

Active User
H-M Platinum Supporter ($50)
Joined
Sep 2, 2013
Messages
2,028
Very nice build Greg. Like the idea of air to the bearing housing. Would some kind of bellows style cover work in addition to that? Maybe something like motorcycle fork boots or the ones they make for shock absorbers. Mike
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Thanks Mike. I thought about bellows, they'd be a positive way to keep the dust out but any I've run across like the ones you suggested are too stiff , you'd loose the feel and the compressed length is to great. I would have needed to add a few inches to the rods just for the bellows at each end. The nice soft rubber ones on my surface grinder cross feed screw were shot, crumbled with age. I replaced them with a bicycle inner tube over a hand wound spring. Effective but they look like crap, good thing the screw is under the table where you can't see it.

Greg
 

brino

Active User
H-M Supporter - Gold Member ($25)
Joined
Jan 2, 2014
Messages
3,761
Hi Greg,

Great build, thanks for showing it.

I see the main shaft is height adjustable at either end. How do you align it? A height gauge?

Thanks,
-brino
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Thanks brino,
The height adjustment is to keep the blade angle right as the wheel wears. Setting it would be another great use for a planer gauge. I made a simple block to hold a diamond point to the blade clamp for dressing the wheel. If I get the heights close dressing the wheel should correct any error. I think.

Greg
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
A quick follow up.
The mechanism works great, produces a nice finish and perfectly straight edge. BUT that POS Chinese grinder is worse than I'd imagined. Absolutely no power, all but the lightest cuts will stall the motor so it takes forever to grind the blade, and by then the motor is really hot.
You get what you pay for.

Greg
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Thanks !!
I really appreciate the recognition.

Greg
 

Tony Wells

Platinum
Registered
Joined
Jan 22, 2011
Messages
7,069
What wheel are you using on that grinder Greg? That may play a part in why it is overloading the motor. You might do better with a little coarser open grit, although you would not get quite the razor edge you see with a very fine wheel.
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Its a 60 grit aluminum oxide wheel Tony. I wondered if a 46 grit might help. It should at least remove material faster. I hone the edge with a water stone anyway, thats one of the reasons I went with this layout to get a hollow grind. A lot easier to hone.
 
D

Deleted member 34477

Guest - Please Register!
Guest - Please Register!
Excellent work Greg. Always enjoy your postings with photos.
 

valleyboy101

Active User
Registered
Joined
Feb 17, 2013
Messages
313
Hi Greg,
I was happy, but not surprised to see your blade grinder in the headlines. It is a beauty. Gongratulations on winning!
Michael
 

Silverbullet

Gold
Registered
Joined
May 4, 2015
Messages
3,482
Beautiful job, I need one like that to sharpen wood chipper blades. My neighbor owns a rental business and rents them 6" + 12" chippers. so ill have a bit of steady income from him plus others near me once the word gets out. most all of my customers are word of mouth , I get better clients that way . Hope it's ok to semi copy it a bit. I like your roller depth adjuster. I had planned on using my surface grinder but this will do it better. Thanks
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
Thanks, feel free to copy. My planer is 15 inch and my surface grinder is only 12 so I had to build this. If the surface grinder was big enough I'd probably have just made a jig for it.
The depth adjustment works quite well. I used a 1/4 -20 thread, with the ratio of the arms it gives about .025 thou per revolution on the adjuster. The big wheel rolls quite smooth, was going to use just a bearing but needed the extra dia to get parts to clear, glad I did it.

Greg
 

Tony Wells

Platinum
Registered
Joined
Jan 22, 2011
Messages
7,069
I think a 46 grit wheel will make all the difference, Greg. I'd definitely try that before replacing the entire grinder.
 

Canuck75

Active User
H-M Supporter - Gold Member ($25)
Joined
Jan 1, 2014
Messages
115
POM. Well diserved credit. Keep those projects coming.

Canuck75
 

derwood144

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
Apr 21, 2016
Messages
8
Nicely done! I've tried sharpening my 15" blades on my 13" surface grinder without much success. I think your project would serve me better. Might be my next one. Thanks for the ideas.
 

eugene13

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
Nov 19, 2014
Messages
429
A quick follow up.
The mechanism works great, produces a nice finish and perfectly straight edge. BUT that POS Chinese grinder is worse than I'd imagined. Absolutely no power, all but the lightest cuts will stall the motor so it takes forever to grind the blade, and by then the motor is really hot.
You get what you pay for.

Greg
Have you thought about putting a flywheel on the other arbor?
 
F

f350ca

Guest - Please Register!
Guest - Please Register!
I may just give that a try Eugene. Hope it has enough power to spin up the flywheel.

Greg
 
Status
Not open for further replies.
[5] [7]
Top