saw blade for trex composite decking

[pmalavolti]

does anyone have eperience on cutting trex decking board w/ a blade other than the freud recomended blade. i feel it is just a gimmick that freud and trex are putting out there but want to see if anyone else has done it with a different blade. i am going to replace the blades in my circular saw, table saw and compound miter saw for the project. $125 for just the blades. money well spent if it prevent killing a board, but i can do the same with blades harbor freight blades, i would love to be able to.

 

[madison069]

I used a high teeth count circular saw blade to cut my boards. Didn't notice any issues really.

 

[ryan20021982]

We have always just used any good higher tooth blade and its never been an issue

 

[gdocktor3]

High tooth Diablo blade is what we use. Actually Diablo blades for everything. Buy at Home Depot.

 

[mechanical turk]

I'd think it's something to do with the tooth hook angle. I know the 80 tooth Diablo blade for wood has a positive angle and the one for metal and plastic has a negative angle. If Trex is PVC then it probably isn't too different from the nonferrous metal/plastic blades.

 

[pmalavolti]

would 50 tooth suffice or 80?

 

[Empty Pockets]

I used a high tooth blade from the local lumber yard in both the circular saw and table saw. I had a high tooth Oldham blade in the mitre saw, they all did good. Just don't try to set any speed records cutting that stuff.

They blades were all sent out to sharpen when the project was done

 

[Empty Pockets]

would 50 tooth suffice or 80?

50 might work, but gonna have to move the material through the blade at a slower rate

 

[ryan20021982]

I would never use HF blades on trex decking, and I am in no way one of the HF haters. Just hate to see that expensive decking chewed up because you wanted to save on the blade.

 

[southalabama]

Diablo has blades marked trex blade

 

[pmalavolti]

Diablo has blades marked trex blade

yes i found those, but i asking if i have to pay an inflated price for those blades or wil a standard blade cut it just as good.

 

[rlitman]

I'd think it's something to do with the tooth hook angle. I know the 80 tooth Diablo blade for wood has a positive angle and the one for metal and plastic has a negative angle. If Trex is PVC then it probably isn't too different from the nonferrous metal/plastic blades.

The negative angle will be especially helpful in a chop saw, where a positive angle causes lift and tearout.

Table saws on the other hand like a positive rake angle (though plastics, not so much).