I have a Bosch 80 tooth blade which is currently in my mitre saw.This was one half of one of the twin packs you may have seen advertised lately.Now i think these blades have negative rake?The blade does an excellent job in my mitre saw but can i use it in my table saw as it is the correct size and bore or will this negative rake business make that a no no.I was thinking it would have been allright for mdf and ply.

Thanks a lot ,still not sure what this negative rake means though.

In answer to your Q's JB, then for the first one, YES!, and in a TS YES!!! it  depends upon the Axial to Bore axis! of your blade, as well as the wedge angle..
there are so many formats of blade teeth, from ATB+, ATB- ,TFT+.TFT-,FT+,FT- and this is with out the addition of the wedge angle and angle to bore axis allowances.. the scope is almost endless! and there is also the Anit-kick back technology on most blades these days....

as for the material being cut, if the operator of the machine be it a radial arm saw, mitre saw or a saw bench/table saw, if the material is snatched then 1) the operater has not understood the materials grain patten, (which can close up around the blade, hence the introduction of the riving knife to saw tables) or the fact the material is moist/damp..... 2) used the required hold downs/clamps  or the required down ward as well as the forward pressure required for the particular machine! especialy relevent on a saw table/bench saw!
(source:- E.Crowley)

as for negative or positive rake, a positive rake will take a bigger Bite from the material where as the negative rake, will take smaller, and slower cuts from the material...
(source:- E.Crowley)

the people who supply me with my blades now days are these guys http://www.crowleysaws.com/Crowley/crowley%20saws.htm... and they seriously know what they are doing in terms of manufacturing saw blades, and most of the above info comes from their very comprehensive brochures!!! have even managed to cut sheet ally on my table saw!!!!! now that is not fun!! scary!! dude!!

sorry to disagree with you JB dear chap, but i believe i was taught different ways.. but hey ho! still i believe and trust your judgement!!

I've been using a negative rack blade in the table saw to cut man made boards, it gives a very good finish but as you say Wolf it does tend to push the material up. Its just something to be aware of.

I know triple chip is the usual choice for laminate etc and I normally use one but we have to try new things.

As for using the 80 tooth the only other point I could add is to ensure that the riving knife is slightly thinner than  the kerf of the blade.

Keith

"bombastic grind" the mind boggles