View Full Version : sharpning jig for bench grinder!
06-26-2003, 01:08 AM
Well, $79.00 and 2 hours later I can sharpen blades ALMOST as good as the big boys (the ones with deep pockets). With angle adjustment to compensate for stone wear. If it is OK with the moderator I will post pics. I don't want to get the Magna-matic folks mad at me.
06-26-2003, 01:14 AM
I WOULD LIKE TO SEE SOME PICS OF YOUR RIG
06-26-2003, 01:29 AM
06-26-2003, 07:28 AM
I'd like to see it also.
06-26-2003, 09:05 AM
E-mail pics to me please!! Thanks:)
06-26-2003, 10:09 AM
I'd like to see em' too. The angle grinder, vise combo I have takes me too long to do the job.
06-26-2003, 11:09 AM
Please do share what you have come up with. This is definitely the place to share new ideas!
06-26-2003, 11:45 AM
Post some pics, or e mail them to me. Always interested in new ideas.
06-26-2003, 12:26 PM
Enough with all the suspense, show us some pictures....
06-26-2003, 06:31 PM
Looking for pictures...or at least a description of what you did. Email me please...
06-26-2003, 08:49 PM
First you fasten a pvc 6" cleanout , then grease the threads.
You then add a 6" threaded/slip coupling. the 2x4's are just a spacer, you will have to adjust this to your grinder
06-26-2003, 08:52 PM
then cut up a cutting board and fasten it to a pooper flange. be sure to countersink the screws
06-26-2003, 08:53 PM
let it flow
06-26-2003, 08:54 PM
THEN WHAT ???
06-26-2003, 08:56 PM
then notch out for the wheel and rotate the gaurd on the grinder.
I cut a square out of the corner of the plastic guide so when you spin the coupling the platform stays stationary. there is 1" of adjustment for the grind angle.
06-26-2003, 08:58 PM
06-26-2003, 08:59 PM
06-26-2003, 09:02 PM
oh yeah $69 of that 79 was the cost of the grinder. I know I will need a better stone. but it is a pretty stable platform. and really simple.
OK...Talk to me like I am 6:D :D Where is the angle adjustment??? I can see the pivoting lft to right, but the angle adjustment???
06-26-2003, 09:14 PM
I think I've got it!!! The angle is created by how far the stone goes into the cutting board....right??? Do I win a prize?? :D Or am I dead azz wrong?
06-26-2003, 09:15 PM
there is no pivot. the surface is stationary it rides along the motor housing side and back with a square notch. and when you rotate the coupling the platform raises and keeps a constant plane
06-26-2003, 09:17 PM
wrong fireman, the grinder stays put and is 40lbs. it has'nt moved a bit. I will go take a few more pics so its easer to understand.
06-26-2003, 09:19 PM
ok....ummmm.....where's the angle then? talk to ME like i'm 4. 6 is a little advanced for the dumb fireman here :cool:
06-26-2003, 09:25 PM
How about this: as you raise and lower the platform it will change the angle of contact with the grinding wheel? I just went back and looked over your pic's. Just twist to raise....right? (Second guess is better than first)
06-26-2003, 09:29 PM
yep....its really simple. I just used pvc and some wood to see how it will work. it works way better than I thought. so I will make a metal one with a dust collection system when the season slows down. I know that pvc wont last more than 6-8 months.
06-26-2003, 09:35 PM
Thanks for the info. I'm only mowing for 1/2 day tomorrow and needed a little project to keep from having to do the "honey-do" list :). I asked for one of those Delta "muliti-tool sharpening" things for father's day. Not really impressed with it. The wheel moves so slowly, I think it would take forever to sharpen.....high speed/low drag is the way to go....thanks again
06-27-2003, 12:08 AM
First you fasten a pvc 6" cleanout
What do you mean by cleanout?? I'm interested in building one out of my bench grinder at home.
06-27-2003, 12:24 AM
They are used in plumbing, so if there is a clog in the drain you can gain access easily to snake the clog out. Any plumbing store should have them.
06-27-2003, 11:36 AM
Great Job, Thanks:)
06-28-2003, 04:30 PM
Any more pictures? or explanations
06-28-2003, 04:54 PM
Hey fella's, this is very VERY important. Get clearance/permission from you wife/girlfriend FIRST, before you go cutting up her nylon cutting board. Trust me on this one! Otherwise you may be sleeping out in the truck with your grinder. Tbarchaser correct me if I'm wrong.
07-04-2003, 11:03 PM
This has been an interesting thread. No Tbarchaser you have not made us Magna-Matic folks mad.
But please keep us in mind if any of your arrangements don't work out.
07-05-2003, 03:38 AM
If it works as good as you're saying, better get a patent quick.;)
07-09-2003, 03:16 PM
I'm going to look into this...
08-01-2003, 04:07 PM
The design is basically that of a MAG9000 but the motor is what changes height on the Magnamatic model.
The design is nice for a home project but the problem I see is keeping the PVC from moving due to vibration (changing height).
Also there was a mistake that was made...Magnamatic is guilty of the same mistake. The platform needs to extend further away from the wheel (to the side- not in front).
I have the Mag9000 and you have to struggle to hold the blade flat because the platform is not long enough to support the last half of the blade as you pull it through. If the blades were completely flat it would not be a problem but with the high lift portion curved up it only gives a small portion of the blade to keep it flat on the work surface.
Fantastic approach to sharpening blades.............
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