scandi grind question

Michael Black

Michael Black

Joined
Jun 29, 2014
Messages
451
At least I think this is a scandi grind...

Anyway, my question is how you get a nice clean finish post HT without ruining the distinct line between the bevel and the flat part towards the spine. I used the file jig that Aaron Gough designed (it's amazing!) and I'd like to keep a distinct finish difference between the bevel and the flat part. My plan was to sand the flat part to about 400 grit, and leave the file finish on the bevel, but I'm realizing the file will be useless post-HT. Any suggestions? I'm down for other finish alternatives, I just want there to be a contrast.

Here's the blade with the flat part sanded to 220.

5VDceJzl.jpg


And then this is what happened when I started sanding the bevel, pre-HT.

 
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Nick Wheeler has great videos on hand sanding on You tube- very rich in knowledge and goodness. Thanks, Nick!
 
I've seen some, but I don't recall seeing one about this type of bevel. Then again, I wasn't making a blade like this when I was watching them, so I'll go back and watch some more. Thanks!
 
I haven't seen a Nick video that was specifically about one grind in particular, but he does go into keeping the transitions crisp, IIRC
 
Basicaly he shows how to hand sand a flat bevel. It doesn't matter if it's a flat grind, scandi grind or sabre grind, the technique stays the same

BTW your bevel looks more like a sabre grind to me then a scandi, but that is only from seeing your pics
 
Can you elaborate on what the difference is between a sabre and a scandi grind? Does sabre go farther up towards the spine? I'm not trying to make this one particular way, I just thought this looked good.
 
Try and read up on scandi;s a bit :)

A true scandi grind is one bevel per side with no secondary bevel. basicaly a flat piece of steel directly sharpened untill they meet.

A sabre grind has like most other grinds a secondary bevel.
Usualy the sabre grind starts half way up the blade (spine to edge) So half the blade is flat, the other half is the bevel. The actual cutting edge(secundary bevel) is ground in after that
 
the way I do my flats to keep the transition clean, is I have a large piece of flat marble I light tack a sheet of sand paper to. I place the blade on the paper flat and using equal pressure across the blade I push the blade forward ( tip to handle ) till I remover all unwanted scratches at that grit and work my way up to the desired grit. this was shown to me by Mike Quesenberry when I first started out.

I do have to give it to Nick Wheeler on his videos he does have a lot of good info there not just on hand sanding but on pretty close to all the steps to a good finished knife
 
Wrap the abrasive paper over the file, or make a "fake file"
from flat bar steel and do the same.
Click to expand...

^ +1 This is what I used to do back when I used a filing jig. I actually used strips of cut up 2X48" belts that I had left over from a multitool belt grinder attachment that I ended up exchanging for their 2X36" one. Those worked nice because they had a stiff backing to them so they wouldn't rip or tear when sanding away. You could cut long strips of sandpaper and tear strips of duct tape (gorilla tape would be even better) and tape them to the back of the sadpaper to make the strips more "durable"..

You can also use the file jig with the sandpaper to make a hand rubbed finish just by holding it down firm and sliding it left to right on the bevel (handle to tip) as opposed to back and forth... A file guide would make it easier for you to use Nick Wheeler's sanding techniques by changing your sanding direction between each grit so you can easily see if you've gotten rid of all the previous grits scratches. Then when you come to your final grit you can go across the bevels to get the hand rubbed finish look or do as you would when filing to make it liike like a nice "belt" finish (how it looks when using a belt grinder).

Here is a video I made a few years ago that I used the hand rub finish "technique" in, just incase you might find anything helpful in it...

[video=youtube;mUyoaXMQDy8]https://www.youtube.com/watch?v=mUyoaXMQDy8&list=TLTfE7uvlJpzZTo9rtU2_-DOmrbvfno38x[/video]

-Paul
My Channel Lsubslimed
 
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Thanks, that's helpful! I actually went and watched that whole build series. Lots of good stuff in there. Beautiful knife!
 
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