Grinders, Files, Running Again!

[michdad]

After a hiatus, I am trying my hand at knife making once again. I still am "trying" to use a 4x36, bench grinder, and files. I have not got a piece looking good enough to heat treat, but still trying.

Question:
I am trying on a couple of pieces of waterjet cut blanks. They are 4 inch blade straight edged cut cleavers. It dosen'tseem to matter what way I grind them on the belt, the edge is not straight. Higher on both ends. Yes they were a little warped when I got them, but I did straighten that.

I know pics would help, just a poor boy, so none available as of yet. any suggestions?

 

[Fross]

I am not fully following you but, I used a 4x36 for a while and even on the so called platen area you cant get a true flat grind, the platens are somewhat con-caved so you cant ever really get a true flat grind off of it, but with practice you can get it pretty dang close, I have also heard of people putting a piece of ceramic tile on to the top of the platen to flaten it up, it will only cost you a dollar and some JB weld, I use a ceramic tile piece on my 2x72 platen, works great.

 

[michdad]

I am not fully following you but, I used a 4x36 for a while and even on the so called platen area you cant get a true flat grind, the platens are somewhat con-caved so you cant ever really get a true flat grind off of it, but with practice you can get it pretty dang close, I have also heard of people putting a piece of ceramic tile on to the top of the platen to flaten it up, it will only cost you a dollar and some JB weld, I use a ceramic tile piece on my 2x72 platen, works great.

Now I feellike a dummy. Checked it, and what you suggested might be wrong was correct! (forhead slap) I will try to compensate, or add ceramic, and let all know the result.

Thanks,

Matt