On Sun, 12 May 2013 04:13:41 -0400, "Michael A. Terrell"
wrote:


ATP wrote:

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
fired this volley in
:

Not particularly durable - it is just tempered cardboard. Wears
quickly - the urethane would be the only thing giving it any
wearability at all.

If it's the hard-surfaced version (tempered Masonite), recognizable by a
shiny surface, then it can be made quite durable.

We covered all the shipping tables at our plant with it, applying two
coats of VERY thinned-out oil-based urethane (to penetrate and seal),
then applying one un-thinned coat to protect the surface. We let it dry
for at least two days between coats, to gas out all the solvent on the
first two, and to permit full cross-linking on the final.

It wears like iron for medium-weight sliding traffic like 80lb product
boxes, scales, etc., although I'd have my reservations about how it would
hold up to small chair casters.

LLoyd

It's a lot harder than most natural wood ply products.


Office supply stores used to stock Tempered Masonite chair mats,
before the molded plastic ones were available. I saw a homemade one the
other day, for a large computer desk.

Oversized casters help there, too. If he goes with the masonite, the
larger wheels would do a bit less damage and make it last longer. If
he goes with carpet, they make it easier to roll on that, too. Since
all the new chairs are adjustable in height, taller wheels don't make
a difference to the user.

--
Cogito, ergo armatum sum.

(I think, therefore I am armed.)