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brownells barrel crowning tool
- Thread starter vicvic
- Start date
UniversalFrost
New member
operator error most likely
Did you apply even pressure and adequate lubrication throught the entire process? Were you using the tool chucked in a lathe with the barrel chucked as well or were you trying to use it in a drill? My guess is you used the tool in an improper setup. Please provide us with more details as to how the tool was used and what setup was used and if you used proper lubrication etc... Also post some pics of the crown so we can see whether it is good or not.
Did you apply even pressure and adequate lubrication throught the entire process? Were you using the tool chucked in a lathe with the barrel chucked as well or were you trying to use it in a drill? My guess is you used the tool in an improper setup. Please provide us with more details as to how the tool was used and what setup was used and if you used proper lubrication etc... Also post some pics of the crown so we can see whether it is good or not.
The straight radial lines are chatter marks. I used one of these tools 15 years ago, before I had my lathe. Mine caused some chatter problems when turned by hand. I pulled the handle off and used a chuck on the end of a 1 foot flexible shaft extension driven by my variable speed electric drill to solve the problem. It apparently evens up the applied cutting pressure better than I can do freehand. More importantly, it seems to be able to cut the high spots in the chatter marks down. That probably depended both on cutting speed and upon the spring winding up slightly due to the resistance of cutting one ridge, so it pops quickly to the next before moviong down into the valleys between ridges and depening them.
Nick
Nick
Harry Bonar
New member
chatter marks
Dear Sir"
With hand turned muzzle crowning tools as was said, chatter is prevalent.
Hovever, there is a way to (most of the time) eliminate it.
When you do this cut a small piece of blue-gene denim - a round circle and then cut a hole for the pilot. oil it good and then with enough pressure to cut the denim slowly contact the 'crown."
You will find that the denim will cushion the cutter and many times remove the chatter - matter of fact you could use two pieces of denim! Try it.
Harry Bonar.
Pray that the violence and hatred in our world will stop!
Dear Sir"
With hand turned muzzle crowning tools as was said, chatter is prevalent.
Hovever, there is a way to (most of the time) eliminate it.
When you do this cut a small piece of blue-gene denim - a round circle and then cut a hole for the pilot. oil it good and then with enough pressure to cut the denim slowly contact the 'crown."
You will find that the denim will cushion the cutter and many times remove the chatter - matter of fact you could use two pieces of denim! Try it.
Harry Bonar.
Pray that the violence and hatred in our world will stop!
UniversalFrost
New member
I would avoid wd-40 unless it is all you can get. Go down to ace hardware or true value and get some machining/milling oil (drill/tapping oil will works as well). I have even used a really light weight car oil (5w-30 or 0 weight), but what ever you use clean the barrel really well afterwards. I would also agree with the stoning/polishing out as well, but takes a lot of time. Best of luck and post some before and after pics if you would when you are done.
I used to be in the machining business before the military and did all my own gunsmith work on my free time at work and they only charged me for the weight of the finished piece of stock (man the stuff I made with some of the horizontal CNC macines, lathes and lazer cutters and then had it blasted/polished and powdercoated and baked!!). Now I have my gunsmith do all the machining. Just had a target crown put on a Remington 700 PSS in 7mm Rem Mag and he only charged me 20 bucks. That's a lot less than what yuo paid for the cutter, the work into it, the work required to fix it, and possibly the price you will pay to take it to a gunsmith and have it done right. Better to not do any home gunsmitthing unless you have the knowledge and PROPER TOOLS ( in your case a lathe and correct cutter) otherwise 9/10 times you will pay more in the long run and probably have to take it to a smith to get fixed. JUST MY 2 cents..
I used to be in the machining business before the military and did all my own gunsmith work on my free time at work and they only charged me for the weight of the finished piece of stock (man the stuff I made with some of the horizontal CNC macines, lathes and lazer cutters and then had it blasted/polished and powdercoated and baked!!). Now I have my gunsmith do all the machining. Just had a target crown put on a Remington 700 PSS in 7mm Rem Mag and he only charged me 20 bucks. That's a lot less than what yuo paid for the cutter, the work into it, the work required to fix it, and possibly the price you will pay to take it to a gunsmith and have it done right. Better to not do any home gunsmitthing unless you have the knowledge and PROPER TOOLS ( in your case a lathe and correct cutter) otherwise 9/10 times you will pay more in the long run and probably have to take it to a smith to get fixed. JUST MY 2 cents..