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Hi,
When you make the thread on a lathe, and keep it a bit oversized, and make the final cut with a 1/2 cutting nut ( don’t no how you call it ), it will fit good, the LDC doesn’t fit on the thread but on the square corner where the thread stops, on your barrel, see red arrow on pic.
Wow, not a whole lot of room to play with there. 🙂
It’ll work. Just definately want to make sure it’s straight.
bik, PM sent. The hole is about .295″… it’s close but think it’ll work.
The hole is big enough right? Probably don’t want to try to fit a .25 pellet through a .22 hole. 😛
Mind if I ask which logun shroud you will be using? Link?
I’ll damn sure take up free offers on anyone that can thread a barrel. I sure know I can’t. The hole in that logun sure is small for that .25 pellet so it’ll have to be straight.
I am skeptical about putting certain items in the mail.
I was talking about the legal risk involved like WOK suggested.
Walt,
The way I read it was the RISK is sending the Logun Moderator to anyone. The thing is a silencer for all intents and purposes in the USA.
I dont believe it was about you being a risk at all. But the last thing you want is the Feds showing up at your door when you take delivery and questioning you as to why you are receiving a silencer that screws onto the end of a barrel.
I believe that is a the RISK mentioned.
It depends on the kind of fit you are looking for. Any idiot can cut a thread with a tap or die; that’s becuase the die cuts the thread to an SAE standard finished diameter. Not too many people can cut a concentric thread, and not everyone with a lathe knows how to use it properly. Cutting threads with a lathe isn’t the same as using a die. You have to cut the major o.d. yourself and the minor o.d. is determined by your finish cut. While it’s possible to cut a thread to a standard size, you should only settle for this in noncritical applications. If you have ever bought a nut and bolt from a store and screwed them togehter, you’ll notice that they aren’t tight; they are cut to minimum industry standards. This is called a Class I fit, which has a lot of slop built in. This degree of tolerance isn’t what you expect in custom work. But, in order to gauge the closeness of fit when cutting the threads, I need the other part that will screw onto it to test for final fit. Custom work like this usually results is a Class III or Class IV fit, something most people, even people who hang around machines a lot, never see in their lifetimes because there just is no way machines can be made with this type of fit economically. This kind of work takes time, huge expertise, and expensive machines to produce. And when you encounter it, there is no mistaking it. There is a silky feel to it, turning a class III fit nut and bolt together. There is no perceptible shake or play at all. I was offering my time free of charge because I know what it’s like trying to produce stuff without the machines to do it; everyone who has a good machine knows that feeling because that’s how he felt before he bought his machine. But hey, if it makes you feel uncomfortable, then by all means don’t take me up on my offer.
Generally Loguns come in 1/2″ UNF (20 tpi). I’d say its highly unlikely one wouldnt be.
I’d also not mail it to anyone (risque). You can cut a thread on a barrel and it will work with the logun. So long as the thread is cut concentric to the bore and the shoulder is parralel it will work and the smith doesnt need to see the device.
Thanks Walt, will keep you in mind when I receive the barrel.
Can someone please verify for me if the Logun accessory threads are SAE or metric and that they are indeed 1/2″ x 20. I honestly have no clue and no pitch gauge.
I can thread it for you if it’s SAE (not metric). You need to send me your receiver (or whatever the barrel will screw into) as well as the barrrel to make sure the parts will go together. drawings help as well if you require a torque shoulder or O ring land.
walt
Bigfoot hunting with his Goats?
No lathe here. I’ll look around. Tim isn’t taking orders until Oct. due to personal reasons.
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Cutting nut = die.