Is there any one that makes and sells single point crown cutting tools?

T

TReed

Guest
I have tried to grind my own tool but do not have the knowledge or experience to grind one that will work worth a darn. Can anyone lead me in the right direction? I am not sure about using a piloted cutter on my bench guns.

Thanks, Trae
 
It is not hard to grind a HSS tool for crowning. Lots of relief and a light cut works best. Don't be afraid of a removable pilot chamfer reamer to finish the crown after lathe turning ... it leaves a finish smoother than any lathe and in line with the bore...
 
Dennis Sorensen said:
I . . .Don't be afraid of a removable pilot chamfer reamer to finish the crown after lathe turning ... it leaves a finish smoother than any lathe and in line with the bore...
Click to expand...
I had a bad experience with a cutter to be used by hand, that did NOT have a removable pilot. The pilot was steel, probably the same hardnes as the cutting surface, since it ws a one-piece unit. OK, I was young and foolish then . . .
 
Well, since I'm already involved........

I'm with Charles. I've yet to see a good hand held tool for crowning.

Maybe there is one, but my expectations on a crown are high. "Finish" I couldn't care less about but a sharp knife edge, sharp enough to curl a fingernail, I require.

I use my own grinds now but own two of the PTG grinds and they work fine. I crown from the inside out at high speed, pulling metal from the bore out. There is no burr and I wouldn't dream of running sandpaper into the muzzle to break the edge.

al
 
alinwa said:
Well, since I'm already involved........

I'm with Charles. I've yet to see a good hand held tool for crowning.

Maybe there is one, but my expectations on a crown are high. "Finish" I couldn't care less about but a sharp knife edge, sharp enough to curl a fingernail, I require.

I use my own grinds now but own two of the PTG grinds and they work fine. I crown from the inside out at high speed, pulling metal from the bore out. There is no burr and I wouldn't dream of running sandpaper into the muzzle to break the edge.

al
Click to expand...




I'm with you Al. That's the way I do it.

Gene Beggs
 
There are more than one way to skin a cat I have found... and there are several ways of crowning barrels that work very well.

If the immediate area where the bullet leaves the rifling is cut square and true to the bore with no burrs that is the best for good accuracy. Whether this is all done on a lathe or lathed and then a reamer used does not matter. Refreshing this crown every 500 rounds or so is not a bad idea either to maintain good accuracy. If the crown is 'finished' with a 60 degree removable pilot chamfer reamer, this refreshing can be done by hand in about 20 seconds, no lathe required.
 
Dennis, I didn't mean that the work should not be done by hand. It is the tool that matters. Somehow, the cutter has to maintain its alignment with the bore, rather than following any wear or damage that happened in use.

The crowing tool I complained about did not meet that requirement. Moreover, the fit of the "pilot" was quite sloppy, and as it was hard, left marks in the barrel.

I believe handwork can be just fine, with the needed skill and correct tooling. I throat barrels by hand, with appropriate tooling, for example.
 
Trae,
I bought a lathe crowning tool from Pacific Tool & Gauge this summer. They were having a special on them. I think I paid $25 for mine. You might give Dave Kiff a call and see if they still have some ot them. ( I'm already ready for somemore Seymour shoots ! )
Best,
Dan Batko

"Where are we going and why am I in this basket?"
 
Thanks for your help!

I was told that PTG only had piloted crown tools. I was not aware they made single point as well. I will give Dave a call and get one ordered. Do any of you have a suggestion on which one to get? I will be crowning on my lathe not by hand. Personnaly I prefer a 90 degree crown but I am willing to try anything. Any ideas?

Thanks, Trae
 
90 degree

use anything even a parting of tool if your careful im cofused:confused:
 
Trae,
I found my receipt(April of this year) for the bits. It reads "516 Barrel Crowning Lathe Bit PTG 145" and I gave $20 for it.
Best,
Dan
"Where are we going and why am I in this basket?"
 
Thanks for all of your help. I think i have it worked out now.

Trae
 
You must log in or register to reply here.
Back
Top