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Re: Pipe threading on a mini lathe ?
You can use the compound to cut the taper with no problem; what you can't do is cut threads on a taper without a taper attachment. Roy
By Roy · #66446 ·
Re: Pipe threading on a mini lathe ?
A second option is to insert a mill boring head sideways in the tail stock. You can use the screw adjuster to accurately set the taper. You will need a 60 degree center on a piece of stock Later....
By Randy Smith · #66445 ·
Re: Pipe threading on a mini lathe ?
You can buy a tool called a "nipple chuck" for this very purpose. Alan
By Alan Muller · #66444 ·
Re: Pipe threading on a mini lathe ?
I need to be able to create/re-thread close pipe nipples and initially figured to use the lathe to do it. However, I ended up taking the 'easy' way out - I fabricated an expandable mandrel out of 1"
By olduhfguy <phbrush@...> · #66443 ·
Re: Pipe threading on a mini lathe ?
No I actually meant the headstock, I have a couple of "antique lathes" and giving the headstock a little bit of yaw is much easier on them than on the Mini! Doing the same on the mini, well you will
By John Kiely · #66442 ·
Re: Pipe threading on a mini lathe ?
John,did you mean to say offsetting the tailstock? Offsetting the headstock would be more trouble than it's worth. You did give me an idea though,how about putting a 60¡ã point on a short round ,off
By mike kolchins · #66441 ·
Re: Pipe threading on a mini lathe ?
John, That might work for very short sections of pipe, as they'd need to be between centers.
By Bill <mister.bill@...> · #66440 ·
Re: Looking at buying the 7" x 10" w/ Questions
Tom, The power and righty required for a given depth of cut and feed rate are dependent more on tool geometry than anything else. With the proper tool geometry you will be able to take a much heavier
By OldToolmaker · #66439 ·
Re: Pipe threading on a mini lathe ?
In one of my lathe books there is a profile for a usable approximation of tapered pipe thread intended for single point cutting. Bear in mind that normal pipe thread has a helical leakage path and
By Alan Muller · #66438 ·
Re: Pipe threading on a mini lathe ?
My thought on this, is "Who needs a tapered thread?" My answer is "Pipefitters". When I was a pipefitter, I had a nice tripod vise and a set of pipe dies. I still have 'em, but haven't used 'em for 50
By MERTON B BAKER <mertbaker@...> · #66437 ·
Re: Pipe threading on a mini lathe ?
That is how it's done on the Unimat DB/SL, and the Sherline. Both types have a pin to realign the HS. On the 7xs, the top slide can be used to cut short tapers, and even long ones, If necessary. Mert
By MERTON B BAKER <mertbaker@...> · #66436 ·
Re: Pipe threading on a mini lathe ?
A pipe threading machine cuts rough taper threads, because that is all that is required to join pipes to fittings,it cuts fast and in one pass. A machine taper thread is a totally different animal. To
By john baird · #66435 ·
Re: Pipe threading on a mini lathe ?
I don't think I would recommend this but has anyone tried offsetting the headstock a fraction of a degree?as can be done on older lathes? My little mini has it's cowl removed now and it would be
By John Kiely · #66434 ·
Re: Retainer, cross slide screw (metric)
One of the advantages of the button head screws is that you can use a ball end Allen wrench in an electric screwdriver to provide power feeds for the top & cross slides. If you use your top slide to
By MERTON B BAKER <mertbaker@...> · #66433 ·
Re: Pipe threading on a mini lathe ?
You can certainly cut a taper that way, Chris, but the problem is how to cut a thread along that taper; that's when you need either CNC or a taper turning attachment to do a good job. Assuming the
By andyf1108 · #66432 ·
Re: Online metal supplier
Hi Mark, Discount Steel has a location just northwest of Fort Worth, Texas, where I have done business with them on several occasions by calling in orders and picking them up. They seem to be good
By Tom King · #66430 ·
Re: Online metal supplier
Take a look at their shipping charges for small quantities. Can easily double the cost. Gordon
By Gordon · #66429 ·
Re: Retainer, cross slide screw (metric)
thanks gerry, andy and ajawa, thats the part I was looking for, and it has all of the dimensions!
By Stefan · #66428 ·
Online metal supplier
Has anyone in the group bought stuff from www.discountsteel.com? I was pricing some 6061 aluminum bar and they had the best price I've seen -- less than half the price of the competition. CRS bar
By Mark Kimball · #66427 ·
Re: Pipe threading on a mini lathe ?
You can also use a protractor to adjust the compound to get VERY close. This one is CHEAP but surprisingly accurate. http://www.harborfreight.com/multipurpose-angle-finder-1028.html Chris
By Chris Bailey <cbailey73160@...> · #66426 ·