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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#41
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cutting (US) pipe taper thread
On 2/9/2012 8:02 AM, Ignoramus13761 wrote:
I have a ****load of pipe taps up to 5 inches NPT. i On 2012-02-09, om wrote: "Tim wrote in message ... On Thu, 09 Feb 2012 00:18:21 -0600, DougC wrote: On 2/9/2012 12:06 AM, DougC wrote: ........ I had assumed there would be taps& dies for this. I have found many sources for cheap dies (pipe threading kits) but no taps yet, and the dies are "long" because they are for threading pipe.... Is there any 'normal' taps& dies sold for this, at a /relatively/ cheap price? I just need the one 3/8"-18 size, internal& external. Well really, it looks like it is easiest& fastest to just order a T-fitting and nipples already made off of McMaster,,, but I am still curious. The methods that I have seen for cutting tapers (or tapered threads) on a normal lathe is to offset the tailstock, and spin the part between centers... but you can't do that if you're cutting internal threads. So that is why I am wondering how to cut internal tapered threads on a manual lathe without a taper attachment, or if it can even be done. You can get taps. Hand grind a few flutes onto an old pipe plug and use it as a ****ing tap for christ sakes. Ig, how do we get a look at your goods? Are they priced anywhere? I would like to find several things. I work for a school district, so bargains are always appreciated. We could use a drill chuck mounted on MT2 to be used on a wood lathe and a 3 or 4 jaw chuck that could mount to 1"x8 RH. I keep hoping to come across a tapping head to mount on a drill press. -- ___________________________________ Keep the whole world singing . . . Dan G remove the seven |
#42
Posted to rec.crafts.metalworking
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cutting (US) pipe taper thread
DougC wrote:
Is both the male & female threads tapered, or just the male? I cannot see from the examples I have on hand if it is both or not. Wikipedia seems to indicate both are. Both are tapered. At least for NPT. Wes -- "Additionally as a security officer, I carry a gun to protect government officials but my life isn't worth protecting at home in their eyes." Dick Anthony Heller |
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