Threaded tube?

[Jack_Hogg]

Well, I am planning to build another airgun. This time no shotgun, but a 20mm short sniper. I do like to make it as compact as possible, so instead of a normal nipple, I want to use a piece of threaded tube to connect my fittings. So if anyone know where i can get these, that would be great

Like my other one



And the treaded pipe I accidentally found on school


Thanks

[Mr.Sandman]

Well, I am planning to build a 20mm short sniper.

Good gracious, you cant make a person from fittings . More to the point it looks like a fully threaded coupling, we have them at my local ace but they are pretty expensive.

I wouldn't recommend them, because its going to be difficult getting them out of the fittings. I would recommend a hex close nipple. They are cheap and well suited to your needs.

[Jack_Hogg]

Well, I am planning to build a 20mm short sniper.

Good gracious, you cant make a person from fittings

Oh yea, I forgot to add "rifle"...
Well, I am going to search for close nipples next week. Thanks.

[D_Hall]

Looks to long to simply be a fully threaded nipple. Pipe threads are tapered. I imagine that a tapered thread as long as that piece appears to be would destroy the pipe. Are we sure that's not just a piece of pipe that somebody threw on a lathe and cut threads into? IE, not pipe threads, but standard UNC threads (or similar)? I wouldn't be shocked to find something like that in an academic environment and it would explain why they're so hard to find (if it's supposedly an off the shelf part).

[POLAND_SPUD]

I know I've seen them somewhere... I imagine they are rare because they are not very practical when compared with standard nipples

[Jack_Hogg]

There is also a piece on the Pitbull 9mm first photo.

@D_Hall
I don't think someone has turned a solid piece of brass on a lathe and cut threads and drilled a hole through. The inside of that piece was smooth. I think it was a seamless thick walled pipe, that was threaded on a lathe in a factory or something... The thread was a standard BSP gas thread. I did cut a straight piece off like 30mm long, and used it to connect my T's together (and endcap).

[POLAND_SPUD]

so couldn't you get a pipe and cut threads in it ??

[Jack_Hogg]

so couldn't you get a pipe and cut threads in it ??

I if I could cut BSP threads on a lathe, I would probably do that. But on my school there is one very old lathe that I only use. I doubt that I can cut threads with that thing.

[POLAND_SPUD]

you could do it with a thread cutter

[D_Hall]

I don't think someone has turned a solid piece of brass on a lathe and cut threads and drilled a hole through.

Never said it was. Said I figured somebody took a piece of pipe and threaded it. But more significantly....

The thread was a standard BSP gas thread. I did cut a straight piece off like 30mm long, and used it to connect my T's together (and endcap).

OK, so you're in the UK or some such. My point stands that I doubt it was a tapered thread (in the US, pipe threads are normally NPT - a tapered thread).

But even with BSP there are two standards. Tapered and parallel (or so sayeth wikipedia). I'd still wager that your piece of pipe has parallel threads.

But on my school there is one very old lathe that I only use. I doubt that I can cut threads with that thing.

Why do you say that? Lathes *excel* at cutting threads. Use the lathe to cut the threads and you'll generally get a far superior product than if you use a traditional tap/dye setup to cut threads. Yes, it takes a bit more skill and yes, it takes longer.... But the results can be spectacular.

[spudamine]

I don't know where you are, but if you're in the UK such fittings are readily available, halfway down thispage for instance (called a running BSP parallel)
there's also a version threaded on the inside which is insanely useful for making valves.

I've always wondered, if sniper is inaccurate as it refers to the role, and sniper rifle is only correct if you have a rifled barrel, what the hell should we call, er 'snipers'?

[D_Hall]

I've always wondered, if sniper is inaccurate as it refers to the role, and sniper rifle is only correct if you have a rifled barrel, what the hell should we call, er 'snipers'?

Heck, I've got a question for ya.... WTF is a 'sniper'? I've never been able to figure out what people around here are talking about when they say they're buliding a 'sniper.' ...Looks like just another spud gun to me.

[jeepkahn]

The term sniper was first attested in 1824 in the sense of the word "sharpshooter".[2] The verb "to snipe" originated in the 1770s among soldiers in British India where a hunter skilled enough to kill the elusive snipe was dubbed a "sniper".[2]

LOL... But I believe they're just trying to say "A more precise/accurate spudgun than your typical s&p" but with fewer words... It's all relative...

[MrCrowley]

I know I can buy threaded tube like that in NZ. Any major hardware store sells it in usually 15mm and 20mm diameters from about 15cm-30cm long. If I want a shorter piece, I just cut it from the longer piece and I haven't had any problems using it like that.

[Crna Legija]

I have seen them at bunnings is australia, i used it to hold my piston on the gun i posted not that long ago