arf wrote:
I am looking for a small heavy block of metal for a kid's
science project. Something that is maybe 1x2x4 inches in
size. The size isn't critical as long as it is not too big.
It would be nice if one narrow and one wide side had the
same surface finish. I was hoping that someone in Houston
might have a scrap that fits this description.

Thanks


Would a machinist's 1-2-3 block work? You can buy the import sets for
quite low prices, and the surfaces are quite flat and evenly
finished....like this pair currently on eBay:

http://cgi.ebay.com/ws/eBayISAPI.dll...6477 409&rd=1

Lemee see...Because you asked for constant surface finish and it's a
kid's project I'll make a WAG that maybe it has something to do with
studying sliding friction? If that's it, maybe you could jazz it up by
making the kid(s) come up with the correct surface areas by subtracting
the hole's areas from the rectangle's areas?

HTH,

Jeff

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"As long as there are final exams, there will be prayer in public
schools"