3 sheets of plywood is not the same as 20 sheets of polycarbonate
First photo shows the material I was cutting
2nd photo shows the damaged bushing. IN fairness I was cutting on a piece of warped plywood as a base with a piece of 2" styrofoam on top, the uneven surface was the #1 reason for the kick back and eventual failure of the $2 part which you can buy from grizzly part # 61 or #65 forget which one.
4th picture shows acculated shavings when NOT using a vacuum.
3rd picture shows epoxy putty put around perimeter edge in hopes of making flow of chips to back more effcient. It helped a littlle, but you still need a vacuum.
5th picture shows an angle grinder cutting out a 1x2" area.
Last photo shows 1x2 piece of aluminum which is the new better positined dust/chip removal port.
While I appreciate the opinions of those with you with saws twice the price of the $200 saw I picked up, this thread is more about what you can do with a cheap saw, what goes wrong, and how you can modify saw to be better. cutting 20 sheets of plastic is going to be hard on any saw due to any slight misallignment causing 20 shear forces moving against the saw, cutting a few sheets of plywood with the same saw would be much easier dibond is a piece of cake.
I have a blower like that makita, I paid $30 on ebay for it. I'm sure your's is much better, but at $185 it should be. For the occassional use I have these tools are fine for me.