No surface Grinder Help

[B. Davis knives]

I dont have a surface grinder. So what I was thinking about doing was.
Taking a magnetick chuck,two pieces of tool steel that have been harden.
Then place them on the chuck and put my blade and spring for a folder in the center of the two harden tool steel.then file them down flat.

will this work

Please let me know if this will work or fail big time .

 

[Patrickknives]

File seems a little rash for surface grinding, I pin my blade and spring to a piece of micarta and then sand on 220 grit glued to a flat piece of granite floor tile (using the micarta as backing for the blade and spring). I started using motor oil as a lubricant and it seem to work very well, Mobile 1 was recommended but all I had so was Exxon type.

I then go to 600 grit to do final sanding. If you are trying to flatten prior to HT may be a waste of time unless you can get really flat out of HT. I work after HT. I am not taking off much, you may have more to remove.

 

[Nathan the Machinist]

I hate to shoot your idea down, but files usually aren't very flat. They're usually bowed, sometimes even in an S by up to 1/16". So you're probably not going to get things a very uniform thickness with a file used the way you're talking about. You might get them in within a few thou, but I don't think that is close enough for what you're wanting, eh?

BTW, if you're ever filing on a flat surface (rubbing a ding flat on an intake manifold for example), you should sight down the file and choose the convex side, otherwise you'll crown your edges.