[TheForge] Re: lamp shade

[Mike Spencer]

Not to go head to head with Ries... :-)

But this is a domestic lamp shade, not an industrial, fork-lift-proof
fixture. .  1/8" (x 1/2 x 1/2 ?) is overkill. And while it's easy to
*flatten* angle, I've always found it an incredible PITA to open up
the angle nicely while keeping the sides flat.  And flat sides is
presumably what you want for tidy fit-up.

If you have a way to shear strips -- treadle shear, Beverly, plasma --
I'd say go with strips of 16 ga. (or even lighter ga.)  and a quickie
tool, sort of a bottom swage, welded up out of 1" x 1/4" or the like
to the angle (110?) you need.  Straighten the sheared strips,
optionally anneal them, dink them into the tool with a thin-edged
crosspeen, straighten again.


When I had a large coach lamp to make, I had a big fab shop shear a
whole bunch of 16 ga. into 1" strips and make them into angle with
their fancy break.  Didn't have to do a lot of eyeball straightening
and the leftovers were handy for years after.


> ...lampshade in the shape of a truncated pyramid...

And don't forget the special light bulbs that are resistant to
pyramid power.  8-)

- Mike

-- 
Michael Spencer                  Nova Scotia, Canada       .~. 
                                                           /V\ 
mspencer at tallships.ca                                     /( )\
http://home.tallships.ca/mspencer/                        ^^-^^