making flange by snipers

[bvaks]

i saw tinsmith making a flange on a cup by some kind of hand snipers ?

[tinstructor]

What kind of flange ? please describe it.

[bvaks]

Originally Posted by tinstructor

What kind of flange ? please describe it.

hi a flange on cup body in order to attached bottom by double seam

[tinstructor]

If you mean snips when you say "snipers", I can't imagine how it could be done.
>Pliers can ,of course,make a flange sufficient to be covered by a double seam.

[bvaks]

Originally Posted by tinstructor

If you mean snips when you say "snipers", I can't imagine how it could be done.
>Pliers can ,of course,make a flange sufficient to be covered by a double seam.

thank u.yes u are right but i saw it in youtube some traditional tinsmith doing it.
i am doing the flange by bead roller .however it is difficult for me to keep the item (a cup) round thanks

[tinstructor]

Yes, a bead roller can do the job.I like a hand swadge machine. Both machines however can cause difficulty in keeping the object round, especially with small diameters,such as 3" and 4" round diameter.

[bvaks]

hi thank u
i have a question concerning double seam in order to attaced buttom to round box body . i dont have a machine for that and i do it be anvil and hammer .the result is not flawless.do u have any suggestions thanks

[tinstructor]

I have answered this before.if you areen't opposed to soldering the bottom in separately, there is a near flawless way,as I tried to explain to you once before.

It will probably need a drawing of the seam and explanation to make it understandable.

[MattM]

Originally Posted by bvaks

thank u.yes u are right but i saw it in youtube some traditional tinsmith doing it.
i am doing the flange by bead roller .however it is difficult for me to keep the item (a cup) round thanks

It's slightly elliptical when you roll it, because it is stretched out of material at a perpendicular angle. It will grow uneven especially around the double seam, so grow it from the center one way then double back to finish. If you're fitting a pipe inside the end of another pipe, like in a downspout drain, you add to the elliptical angle relative to the decrease in the top to bottom. Your pattern ends up like an arc shape.