Did anyone get the inserts I sent yet?
If so I'd be anxious to see a video of those CCGT32.50.5-PF2 WXN15 inserts working, showing the chip control.
(03-26-2015, 02:20 PM)PixMan Wrote: [ -> ]Did anyone get the inserts I sent yet?
If so I'd be anxious to see a video of those CCGT32.50.5-PF2 WXN15 inserts working, showing the chip control.
After reading this I went out to the mailbox and there they were. I'll definitely do a video when I try them out. And thanks for the little extra. That's a neat tool with a lot of information on it.
Ed
I got more of those "little extra" things too, if anyone else wants one. It's about a buck to send one, a Valenite Tap Calculator. It's an old fashioned "slide rule" style glossy cardboard thing that allows you to select a given tap size, then shows the right drill for it. It covers UN and metric taps, gives expected percentage of full thread. It even has the drill sizes for form taps.
On the flipside it has the cutting speed for taps. Nice tool.
yep got mine but its going to be a bit before I use on, I have a 22 caliber barrel that I'm wanting to do the finish pass on the taper with one.
Also thanks for the slide rule, its a nice bit of tooling to have hanging around the tool box far as I'm concerned companies should go back to making them and handing them out.
DA
David,
While the grade and "extra sharp" geometry was developed for aluminum alloys. the fact that it's a Titanium Carbo-Nitride coating allows it to work on other materials. I would run the barrel at 250 to 300 surface feet per minute. This will be a good test because with a tapered gun barrel it's a long, unsupported cut and subject to chatter. The sharp edge should eliminate that completely.
A gun barrel taper should be low enough angle to use the offset tailstock method rather than waiting to find a lathe with a taper attachment. You should find one of the "bell mouth" style center drills to drill center holes in plugs you make for the ends of the barrel, offset the tailstock and set taper by checking the "per side" taper with a long travel indicator mounted on your carriage. It's easier than it may sound.
Best of luck.
Ken
(03-26-2015, 04:23 PM)PixMan Wrote: [ -> ]David,
While the grade and "extra sharp" geometry was developed for aluminum alloys. the fact that it's a Titanium Carbo-Nitride coating allows it to work on other materials. I would run the barrel at 250 to 300 surface feet per minute. This will be a good test because with a tapered gun barrel it's a long, unsupported cut and subject to chatter. The sharp edge should eliminate that completely.
A gun barrel taper should be low enough angle to use the offset tailstock method rather than waiting to find a lathe with a taper attachment. You should find one of the "bell mouth" style center drills to drill center holes in plugs you make for the ends of the barrel, offset the tailstock and set taper by checking the "per side" taper with a long travel indicator mounted on your carriage. It's easier than it may sound.
Best of luck.
Ken
I will have access to a lathe with a taper attachment on it in a couple weeks, also the brains of the instructor at the tech school where I have signed on of another round of gunsmithing.
This barrel is only 20 inches long with only about 17 inches planned to be tapers from 1" to .875" just enough to make the barrel look longer then it will actually be.
I only plan to use the inserts to do the final finish pass on the barrel, and your right they are sharp, shop monster wanted to use on to sharpen his gopher hooks with.
Thanks for the tap calculator.
DA
Ken, do you take paypal? I'd like one of those calculators if there are any left.
Thanks!!
Sure do. use my
E-Mail Address to send payment.
I got about 20 more. They didn't cost me anything but do cost a little bit to send them out.