How are these reliefs cut?

[naccibobacci]

Could experienced makers tell me how Trident knives may be machining these reliefs in their knife handles. These are the same reliefs used to free the lock arm on their framelocks. This question is part of a larger question I have which is how exactly do many of the best Makers machine the relief for their liner locks. Thank you. http://www.finercutlery.com/products.php?category1=Trident/Crusader+Forge

 

[L6steel]

I believe they use a bull nose end mill.

 

[Frank Niro]

A 1" wheel on your belt grinder will easily do this. Frank

 

[naccibobacci]

A 1" wheel on your belt grinder will easily do this. Frank

I've tried this method using a .500 small wheel on a KMG grinder but the Bearings at the ends of this wheel do not allow the handle access to the grinding surface. This method also does not account for the "bathtub" scoop that most reliefs show at the the top. Can you give me specific advice on how to achieve this using a small wheel.

 

[David Schott]

Looks like a small wheel to me, too...i don't understand how the bearings would get in the way considering the belt is 2" wide and the knife handles are less than that.....

 

[naccibobacci]

Looks like a small wheel to me, too...i don't understand how the bearings would get in the way considering the belt is 2" wide and the knife handles are less than that.....

You would have to grind the relief all the way across the handle to utilize this method. Michael, the tip on the Ball Nose carbide cutter sounds promising to me. Thank you for that.

 

[Fellhoelter]

The relief appears to be milled in with a ball endmill on the ones you can zoom in close enough to see.

You mean the relief seen on knives Here, and Here right? If so, ball endmill.

I think everyone else is referring to the texture put on the handles, not the lock relief itself.

 

[Nathan the Machinist]

Brian is correct, those appear to be cut with a ball nose end mill

 

[naccibobacci]

Those are the exact reliefs I mean and thank you for setting me straight on this point fellas.