Re: [hobbicast] Crucible
- In a message dated 4/2/01 10:28:50 AM Pacific Daylight Time,
> When you watch a "movie" what you are really seeing 48And most people who look at a camera or projector think the film moves past
> still pictures a second and they look to the eye as if they are moving.
> Isn't this world great????????
the lens at that speed (16 frames/sec on the old silent films, that is why
they look so jerky and fast when projected on a newer sound type projector)
But the film really stops for each frame while a shutter opens and allows
that single frame to be projected or exposed. Then the shutter closes and the
next frame is set in place. Also a facinating chunk of machinery to achive
High Desert of California, Palmdale, Littlerock.
[Non-text portions of this message have been removed]
- Dale, Don't junk your crucible 'of unknown' origin. Heat it to
super hot, scrape and pour out any residual metal and then use it
for whatever. Yes, I know that you aren't supposed to use a si
bronze crucible for leaded brasses. But I do that after a cleanup
without problems. I regularly convert my silicon bronze
crucibles to yellow brass crucibles when the wall thickness of
the bronze crucible get thin enough that I get concerned. The
yellow brass crud will then increase the wall thickness to the
point that I junk the crucible but after getting double duty.
Foundryman in Missouri, USA
Custom Castings by Twaddell