Re: [Phys-l] lead brick

[Bernard Cleyet <bernardcleyet@redshift.com>]

I pick up during my walks the tyre balancing weights.  I now have a  
coffee can full for eventual casting.  Tyre firms may collect recycle  
money, so not readily given, but try (and try , try  again).  I use  
small (e.g. 12 V. 10 AH) Pb-acid batts. for clamping when gluing and  
as inertia and increased friction for rigidity of my coffee table low  
friction cart track.  These are plentiful where ever electric carts  
are used.  e.g. Santa Barbara Beach rentals (from a friend) and  
golfing**.  These are handily already encased, but don't use as a  
Behr free fall dropper; acid all over.

** Uninterruptible P/Ss too.


bc full of humor today.

Recyclers are another source.   Also the backing of dental X-ray film  
-- this will require many dentists and use of exploited student  
labour.   Finally, EH&S have oodles of those little (and not so  
little) Pb bottles to transport radio-active  sources.  You have a  
research Bio. Dept.?

On 2009, Oct 15, , at 11:52, Anthony Lapinski wrote:

> I'm looking for a rectangular lead brick to do some mass/weight/ 
> inertia
> demos. I got one (2" x 4" x 8", mass = 12.5 kg) from Biodex years  
> ago, and
> now they want $85 for it.
>
> Anyone know of a relatively inexpensive source for these bricks?
>
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