negative rake = tooth leaning backwards a little rather than forwards.
Often found on laminate blades and similar at the local home center but
better to use quality blades if you are making more than a few pieces.
negative rake requires more pressure and generates a little more heat
but gives a cleaner cut on materials that tend to shatter.

triple chip is a little more difficult to describe...Most woodworking
blades are beveled alternately side to side at the top of the teeth and
some have an additional flat top "raker"to clean the gullet to a flat
bottom. Triple chip grind has a flat raker followed by another flat
tooth with the corners cut off. Sometimes there will be a third flat
topped tooth also with a slightly different pattern. The key is the
tips of the teeth are FLAT relative to the blade's circumference so they
remove cleanly without tearing side to side. Beveled teeth will cause
side thrusts which are fine for wood but lousy for metal and plastic.

Triple chip is common..look at the tooth tips at any home center and
you'll see the differences.

Probably didn't describe it well but it's 11pm and I've been workin for
14 hours now. maybe someone else can do better

Koz

wrote:

What exactly are "triple chip grind blades with negative rake"? Maybe
we can improve our cut finish?

Also, I should have mentioned, part of the part has a small notch cut
into it with a router. It leaves a slight burr as well.
The burrs aren't big. Maybe like .020 proud.

Joe