"Mad Scientist Jr" wrote ...
Over the years I have found random tins (some square with hinges, some
round) are great to use for project boxes. Especially for very small
circuits (ie preamps) that need RF shielding.

Can anyone recommend a good vendor of small tins? Buying them at the
supermarket gets expensive, and I hate wasting mints (I already have
too many! my teeth can't take anymore!). For my current project even a
box half the size of an Altoids box would be too big (I am currently
looking for something the size of a matchbox, or round ones as big
around as a quarter and about 1/3" deep).

Any recommendations would be much appreciated!

I make small (and even medium-to-large) cases of arbitrary
sizes out of various widths of aluminum "U-channel" for the
sides and flat pieces of aluminum (or ABS textured plastic, etc.)
for the "top" and "bottom". For rather small sizes, both the
channel and the flat pieces are stock items at larger R/C
hobby / model stores.