Messed up grind need ideas

B

bali-soong

Joined
May 23, 2017
Messages
24
Hello,
some time ago I started to make this knife and totaly messed up the grind. Yesterday I tried to fix it its much better now it's still uneven at the top but looks way better than before. Thats the second knife I made so I'm still learing. As you can see the first time I tried to grind the bevel I came back a little bit to far and now I got some marks from the grinder that look ugly. If I just grind them out I don't think it will look good. Anyone got an idea what I can do to get it looking a little bit nicer?
bui480j.jpg

CgJV3Yk.jpg
 
That bruce bump file guide is just plunge line guide? Will be hard to file that radius on evenly on both sides I think I need to go back quite far. But I try it anyways can't get much worse.
 
Toss it in a drawer and start on another. Don't throw it away. Some day you will be doing great work and you'll want to revisit this one to remind you how far you've come. These kinds of things are just part of the cost of learning. Take the lesson and move on.
 
You can fix it, but Marc is right I think.

In your first picture the grind went too high and you bit into the spine. To fix it you can get a welding magnet to hold the blade and flat grind that entire side until the grind comes back down.

Then to fix the bottom of your plunge you can use a file guide like suggested. Just move your plunge line further back. You could even angle it forwards if you wanted.
 
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Thanks for all the answers!

i4Marc said:
Toss it in a drawer and start on another. Don't throw it away. Some day you will be doing great work and you'll want to revisit this one to remind you how far you've come. These kinds of things are just part of the cost of learning. Take the lesson and move on.
Click to expand...

That would be probably the best but I still wanna make the best out of it.

Also maybe some of you unstod something wrong due to my bad explanation the thing I'm worried about are just the spots I ground in with the belt back at the handle part behind the plunge. I just will do a full flatgrind on both sides now it just not simetrical cause of my bevel jig I made in 5 mins. The jig was better than the first time but still not perfect. I'm also thinking maybe my grinding table is not level. It maybe is a bit bent its just made from aluminium. I think I can just fix the grind with a better jig and the plunge should be not that big of a deal with a file guide I just harden 2 pieces of O1 and bolt them together.

JG Custom Metal Works JG Custom Metal Works
I guess thats the best fix for that the choil is already quite big but I won't get those grind marks out any other way I think. I don't wanna grind the whole knife flat I think I bet I would fail with my setup because the flat surface on the grinder is not long enough to fit the whole knife at one time.
 
I will. Mistake first time grinding the bevel was I was forcing it way too much thats why I came back to far.
 
If it was me I'd take a half round file to the blade and make it a big radius. I know this world take some hand filing and everyone doing this for a profit likes to speed things up with grinders.
 
This is a real rough file job just to show radius shapes. If you look at the file marks you will see that the file is on an angle to get the "grind" line to 90 degrees to the blade. the small one is a 3/8" round file and the big radius is a simple 8" half round file. Looking at these, I'd go with the 3/8" if you can make it work. push your grind line back a bit and it might look good.





 
bali-soong said:
One more question JG Custom Metal Works JG Custom Metal Works
Do you mean a pluge like this?
http://ryanwknives.blogspot.co.at/2012/12/sweeping-plunge.html
Click to expand...

You don't need to do a sweeping plunge. Just do a regular plunge, just move it back towards the handle. As long as the choil goes up into the bevel a bit, it won't be sharp. Make the choil bigger and just move the plunge back, towards the handle, so it starts in the middle of the new choil. You can always move it further back. You can't put material back, as you've learned. All you need to do is go far enough back to be able to grind a bevel over the mistake. Look at the ESEE 6 as an example
 
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