Rosenthal supply,Miami has a great assortment of all types of draw
plates cheap to pricey. tubing though is easier than it sounds..
lube a common gauge plate and you can pull sheet that is annealed
through it to make tubing, or swage it on a block or a routed piece
of hardwood to start it, then flow solder on the seam. polish and you
are there!. have no fear!just try it. anneal some 22-24 g sheet
silver, and if you want a quick experiment, take a piece of 1"x4" and
drill a hole, if you have silver and demming bits drill a tapered
hole, then lube it well with a stick of cocoa butter, beeswax, or med
weight oil. (not light as it will be absorbed by the wood), then roll
the annealed sheet around a broach or any mandrel that is about a
size or two larger than the hole you have drilled,if you have draw
tongs-great- if not cover your favorite gripping parallel type with
some tape or stick on felt strips ond pull it through the "plate"
until you have a solderable tube of a length and i. d. /o. diameter
it is far easier than you may think, Most suppliers sell tubing in a
variety of colours,karats, wall thicknesses so double check with the
sales person that it is not misprinted. at present I think D. H. Fell
has the thickest seamless available- could be wrong, but of the
stacks of catalogues i have that comes to mind after trying to have
some sent from Hoover and strong- which is only standard in wall
thickness. there sre some tube settings though that come in fairly
thick, though nowhere near what you can make yourself. and there has
been a recent noose, uh, thread, about good tools vs. bad tools.
drawplates were cited- if you are begining you don't need the
sapphire lined precision tapered 600 dollar drawplate. the 25 dollar
model works equally well if you anneal and lube conscientiously! R.