[MF3D.FORUM:398] Re: Sputnik fix up kit - Part II

[Brian Reynolds <reynolds@xxxxxxxxx>]

Harold Baize wrote:
> Brian Reynolds said:
> > 
> > Having managed to mangle a pair of PVC caps without maiming myself
> > (Never use an electric drill without really good clamping!) I've been
> > thinking of alternatives to the "drill a precisely sized and centered
> > hole in a cap/bottle/etc" problem.
> > 
> What about making a mold from the FED lens shades? 
> They fit the Sputnik perfectly. It should be possible 
> to copy them, but I have no idea how difficult or 
> expensive that would be. Anyone out there familiar 
> with this sort of thing? I remember molding objects 
> in sand and pouring metal into the sand molds in 
> junior high school shop. 
> 

Besides the intellectual property problems of pulling a copy from the
FED shades, I have to think that making conical shades from flat
materials would be less work.  You could manually cut out a pair of
shades (my original idea), or if you want to go into production you
could get a die made, or to avoid that expense have the shades laser
cut from sheet material.  Assembly is simply rolling the sheet into a
cone, gluing and clamping.  The shades could be shipped flat to avoid
damage in transit.

If someone would measure their shades I'll make a pattern and put it
on my web page (and make a couple of shades to test).

-- 
Brian Reynolds                  | "Dee Dee!  Don't touch that button!"
reynolds@xxxxxxxxx              | "Oooh!"
http://www.panix.com/~reynolds  |    -- Dexter and Dee Dee
NAR# 54438                      |       "Dexter's Laboratory"