Jerry Hey wrote:

Paul, it is easy to find 6" O.D. SS tubing remnants in this area.
It is used in the vinyards. It is type 304.  The gentleman I talked
to thought both 049 and .063, were available,  but he did not want
to walk out the the remnant pile to find out.   I don't know how 304
stands up to the heat.   Very hard on tools as I recall.   Jerry

304 will work. Not quite as good as 316. There are tricks to
drilling SS. As I recall you need to keep the pressure on and
keep it cutting till it is done. A plasma cutter is no problem
however. Tracy just bought a new one. You might find a sheet metal shop
that does commercial kitchens.

George Lendich wrote:

304 is a bugger in that it work hardens. In drilling, use coolant if
available,
however thiner sheet is no where near the problem as bar stock.
Keep the drills sharp and cool and there is no problem.

George (down under)

 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org