Scraping?

F

fishfinder401

Joined
Jun 30, 2015
Messages
9
Hi everyone,
I remember a while ago in a video of a Japanese knife maker, he was using what i can only describe as a draw knife for metal, and i was wondering if anyone could give me a little more insight on this tool and technique, because it seems like something i could definitely make use of.
Thanks
Noel
 
I use a parting tool from a lathe to do this. It works great for high spots on flat grinds. It leaves a good bit of scratches in the metal, so judging when to stop and start sanding is challenging.

0264205-23.jpg
 
That is how I use it, oh and it also works after the blade is hardened. It really helps me because I don't yet have a belt grinder and it seems to move a good bit of metal.

I have tried talking to a couple of folks about it, nobody I talked to seemed interested. Good luck with it. I think it works well.
 
Thanks, ill give it a try, might make up the tool for it tonight, so im guessing go for a very hard, close to 90 degree angle edge? and thats my plan, as for a belt grinder i only have a 1x42, which works, but this might save me a lot of time ad belts
 
I believe the tool is called a Sen scraper and that about sums up all I know about em.
 
It is called a sen. Don Fogg was the person who popularized it recently among US bladesmiths. Once you get the hang of it, it will make shavings like a lathe does.
 
Yes,....avoid chatter.
Just like using other cutting tools, chatter will destroy the cutting edge. The knife/sword blade must be firmly clamped down on a firm base. Use smooth and even strokes. Let the tool do the work.

Another type of sen is used to cut a fuller and will make a groove in no time at all.
 
thanks for the tips, and ill make sure to have it clamped down well when i try it, i have a lot experience using a drawknife on wood from making longbows, so hopefully some of that will carry over to this. also glad you mentioned using it for a fuller, i've been thinking of trying to do a few, and now have a possible way to do it
 
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