tie bomber scribing circular lines

[rambo5788]

hello there I am wondering if anyone has an easy way to do this I want the mines to be true but I also don't want to take the time to design and make a jig to hold the hull tubes as I scribe the circular lines at the front. any hints or pics of what others have used.
thank you

 

[eagle1]

If you have access to a metal-working lathe this is by far the easiest method other than that use a tube that slides over the outer diameter of the bomber tubes and scribe the lines, though this is time consuming and can look messy if you get it wrong!.
Stu

 

[tk1608]

Hi There, I made a ring from styrene and scribed against it. It's a bit awkward, but not too bad.

Cheers

Phil

 

[rambo5788]

thank you I do have a lathe why didn't I think of that
the styrene collar is also ingeinius
thanks

 

[tk1608]

Yeah the styrene collar was a good idea...I can't take credit for it though..saw it here on the original bomber build thread I think. Thanks to whoever's idea it was.

Cheers

Phil

 

[Contec]

Why not use a pipe cutter?

 

[MonsieurTox]

Why not use a pipe cutter?

That's a good idea but those lines are quite wide !

 

[rambo5788]

I have tried the pipe cutter idea and my hands just aren't steady enough to keep an even keel so tp speak yaarrrrr
quiz what is the first letter of the pirate alphabet............................................................................................................................................................................................................................................................r as in arrrrrrr