I have failed in my search for a system to Stamp
Concrete with letters and numbers that are interchangeable.  I'm
looking for a system that would allow the type to be interchanged, and
that would be suitable for stamping letters in the size, .5" to 1.5".

I envision a system like a branding iron, with a face plate that would
allow 'text' to be interchanged like a typesetter.  I have found some
small systems that are indeed like typesetting, but the lettering is
too small.  The letters would mostly be 3/4" and 1" but may need to be
slightly larger or smaller.

This system will be used to 'stamp' custom made stepping stones with
interchangeable text, so the 'depth' of the lettering would need to be
a minimum of 1/2" and possibly deeper.  The letters will need to NOT
be reverse lettering, as it will be stamped on the top of the stone,
as it will appear.

I have found a few systems on the Internet that are unacceptable.....I
need to be able to go at least 8 letters wide and preferably a minimum
of three lines, although it would be possible to do it one line at a
time.

I would hope to find this in a range under $150.00, but will consider
higher priced systems.