Need help on flat grind!! Plz help

It wasn't all that long ago that I started also. One thing I learned was it doesn't matter weather you use a jig or freehand. Which ever way yields good results it what I focused on and that was using a jig. I have gone and done a bit of freehand since and it has even helped me freehand using a jig first. Another thing when grinding I've learned it to read your grind. Your grind tells you what's wrong. If you have either too much time or pressure in a given area your grind will climb up the blade and if your not giving a specific area enough time or pressure it will not climb as high as the other areas. Angle of your blade to the platen also comes into play. It's all correctable. Hang in there it will come to you. Just remember that time and pressure will climb the grind up towards the spine. Hope this helps but it's hard to explain in words.

Jay
 
The same thing that causes it at the tip causes it anywhere. You have been given all the answers you need at this point. Now you need to practice and figure out what works best for you. I ground 10 blades that went in the trash before I got a good one. Relax and be patient, it will come.
 
Ok last question this is what my freehand hollow grind and I can't seem to figure out how to get the part closest to the handle to go up even after 15 blades and I don't want to change the horizontal angle
 
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It's been answered a few time already. Just like the tip, it needs more pressure and/or time on the belt. If you start your grind at the tip and move to the plunge, and stop immediately when you reach the plunge, the rest of the grind has spent 2-3 times mor time on the belt therefore not removing as much metal.
 
Its the color combo of the Green shorts and the red shoes. That's whats throwing you off. :p

Slow down, use even pressure and a consistant time across each part of the blade. Adjust the belt over just a tad to clean up your plunge lines.

Practice makes perfect.:)
 
Rhinoknives1 said:
Its the color combo of the Green shorts and the red shoes. That's whats throwing you off. :p
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Awesome Laurence. ;)


One thing you might find is that when you get to either end, your angle can change. I find that I have the most trouble at the tip or at the plunge.
If you move either tip or butt into the belt even slightly your grind height will change like that. That's what the red shoe pic above looks like to me, but I'm not pro either.
I get better with each blade, but I still have a ways to go. I do all free hand grinding, but it's going to work the same either way.

I just watched your video. Again, I am no pro and still learning every day, but from what I can see, you are putting a lot of pressure on the blade right off the bat.
Learn to feather the blade into the wheel or platen where it's almost taking off no metal. Once you feel it is in place against the wheel or platen, then add a little more pressure and start the stroke.
Also, you aren't moving your right thumb that is bracing the blade. Maybe it's just me, and that is a fairly short blank you are working with, but I'd have my thumb in at least two places before I finished making my way across that surface. If I didn't, I'd get uneven grinds too. Uneven bracing is going to change the left/right pressure as you move across the piece. That's what I was trying to say above. If the angle changes, or the pressure on one side changes even slightly, your grind won't be even.

Watch this guy grind. His finesse is just awesome. You won't see him muscling the steel into the grinder anywhere.
https://www.youtube.com/watch?v=Og5GL5PGo_U
 
grussingcustomknives said:
Ok last question this is what my freehand hollow grind and I can't seem to figure out how to get the part closest to the handle to go up even after 15 blades and I don't want to change the horizontal angle
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When I freehand grind I use a file guide. I got mine from Bruce Bump, a knife maker here on this forum. Riverside Machine Shop also makes one. Helps keep the plunge line straight. I know some guys use the Bubble Jig system by Fred Rowe for help with freehand grinding.
 
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