A thin kerf, coated blade, such as a Freud Diablo, works just fine. I
tape all laminate cuts on both sides and set blade height just above
the insert (carbide tooth) height. Even a new 40T HF blade works fine
for awhile.
The glue in MDF and OSB seems to be the dulling agent in cutting,
rather than the melamine, although I haven't cut a shipload of it.
Try a
http://tinyurl.com/77knf8m or
http://tinyurl.com/6n76v5o. I've
been sold on Freuds since buying a little 7.25" Diablo for my circ
saw. It has outsawn and outlasted my old HF blades by 8x (so far) at
only twice the cost of the cheaper blades, an excellent value. The
D1244X is only $34 for my miter saw, so that's the next one I buy.
Then probably a D1060X for my portable table saw, as I need them.
(If someone wishes to give me half a dozen Forrest blades, I'd happily
accept them, BTW.)
--
In an industrial society which confuses work and productivity, the
necessity of producing has always been an enemy of the desire to create.
-- Raoul Vaneigem