kenl
Member
Registered: 08/24/09
Posts: 45
Loc: Michigan
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This is the first iteration of a saw plate holder. Magnets at 5 for a $1.00 at my hardware store. I plan on adding a couple of rare earth magnet to secure the plate for belt sanding as it currently acts like a missile launcher when the sander starts up and i don't want to continue to clamp the plates down as that makes it hard to get consistency for this step. That's a scrap plate in the pictures-no good plates have been harmed in this experiment. The magnets are set flush with the surface in pre-driled holes. Just pounded them in. Works fine and they are strong enough to have paper between them and the plate. The rare earth magnets will insure that.
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ken
Edited by kenl (08/31/12 10:52 AM)
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RonB1957
Member
Registered: 02/15/11
Posts: 943
Loc: IL. near St. Louis
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I have a 6" x 18" magnetic chuck that works great. Of course it also requires a demagnetize r. I don't use a power sander, however. Just good old fashioned hand power. Ah. it's good exercise.
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Just living and learning
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AHill
Honored Veteran
Registered: 01/16/06
Posts: 5148
Loc: Antelope Valley, California
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If you are belt sanding a saw plate to restore it, I hope you aren't intending to resell it, because belt sanding probably destroys a lot of it's value. You would remove the etch from the blade (if any exists). Gentile removal of rust is preferred. Slight pitting doesn't impede performance.
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Still Learning,
Allan Hill
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MarvW
Member
Registered: 08/27/07
Posts: 2420
Loc: Northern California
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Allan,
I have to agree for the most part. I have used my hand held belt sander on only about three saw blades. They were an exception. They were badly pitted and rusted. Nothing I could do to them in the way of sanding would have made them any worse. Normally those kind of blades would be tossed and replaced, but they were in the "special needs" category.
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Catchalater,
Marv
I did then what I knew how to do. Now that I know better, I do better.”
― Maya Angelou
I'm working toward my PHD. (Projects Half Done)
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Pedder
Member
Registered: 02/20/07
Posts: 958
Loc: Kiel / Germany
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Usually there are holes in the blade - I turn screws through that holes.
And if you sand saws, there is no reason not to use the belt sander, it just takes a little training.
Cheers
Pedder
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Old Ladies
Two Lawyers Tools - Klaus & Pedder bauen Sägen (sic!)
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Timberwolf
Honored Veteran and lant something or other
Registered: 06/05/02
Posts: 60028
Loc: Sparkling Clearwater, Florida
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I dont care for a magnet to be near a saw blade because of magnetic induction...when you sharpen a magnetized tool, the filings/grindings can "stick" to it and the file, making my blood pressure rise!!  
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"Remember, we are First Marines, and all the communist SOBs in the world cannot stop us from going where we intend to go".."Chesty" Puller Lt.Col. USMC..Chosin Reservoir, Korea 1950
Jack Edgar USMC.. Korea '51/'52
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MarvW
Member
Registered: 08/27/07
Posts: 2420
Loc: Northern California
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Jack,
I was thinking the same thing. Sometimes my file will become magnetized for no reason. Drives me nuts. Having magnets clinging to my tools is something to be avoided.
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Catchalater,
Marv
I did then what I knew how to do. Now that I know better, I do better.”
― Maya Angelou
I'm working toward my PHD. (Projects Half Done)
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kenl
Member
Registered: 08/24/09
Posts: 45
Loc: Michigan
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OK so now I know I need to demagnetize the blades routinely. Ideas on how to do that? The belt sander is not a tool to be used where etches are present and requires a goodly amount of practice-I used them to sand the proud top end panels on $5000.00 and up desks for a number of years in the contract furniture industry so I'm pretty good-wrecking one of those could spoil your whole week. A fine belt and light touch keeping things cool work fine and do no harm absent etching. It's close to how blades were originally finished I think (surface ground)
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ken
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jossimbyr
Psychic. Or was that Psychotic?
Registered: 03/22/11
Posts: 397
Loc: Troy, AL
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Not using the magnets would be an excellent start. 
I think Pedder's recommendation on using the holes already in the blade to hold it in place is top-notch. As far as undoing magnetization, there were some recommendations in the following thread:
web page
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Interested in looking at my tools? :P Check out my image sets on Flickr...
http://www.flickr.com/photos/76077448@N00/sets/
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Timberwolf
Honored Veteran and lant something or other
Registered: 06/05/02
Posts: 60028
Loc: Sparkling Clearwater, Florida
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I have a large machine shop demagnetizer that works pretty well, and I mentioned that I made one to keep my watch repair tools demagged...Just made an armature the size I wanted and wound all the copper wire from an old electric motor around it..I still have it somewhere..Also mentioned that it's easy to make one out of a pistol-grip instant heat soldering gun. If you were to make the loop large enough, you could use it on a saw plate.
Magnetism is both good and bad, but around most tools, it just bad!!
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"Remember, we are First Marines, and all the communist SOBs in the world cannot stop us from going where we intend to go".."Chesty" Puller Lt.Col. USMC..Chosin Reservoir, Korea 1950
Jack Edgar USMC.. Korea '51/'52
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