Best process for this blade detail

R

Rickoo

Joined
Feb 23, 2017
Messages
68
Not sure how to upload a picture here. There is a dagger on this site that has me curious. It's the Hattori 2016 Year Knife. Second knife down on the page.

The dagger has a small concave detail at the blade's center. Looking for opinions on how to create this?

http://www.japaneseknifedirect.com/hattori.html
hattori.html
 
It is called a fuller. It is most likely milled in on that knife. There are other ways, but milling is the most exact and simplest.
 
Ah, should have guessed a mill. So, not have a milling machine, any suggestions on how to create a fuller?
 
If you have a drill press you don't mind ruining, you can use that as an impromptu mill. But since drill presses aren't meant for lateral loads, you will likely toast the bearings, and throw the chuck out of center.

If that isn't in your wheelhouse, you can pad the bevels with leather and clamp down some flat stock as a guide and go to it with a file to rough out the fuller, then go to increasingly higher grits of sand paper or better yet move to cratex bits.

I am not sure how abrasive or what their durometer rating is of Cratex bits are. Due to that, I am not sure if they can be used from the start.
 
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