Anyone who has the same saw as I do (PCB270TS) knows how dificult it is to fabricate a zero clearance insert plate for it. I ended up buying two inserts for the saw. At $24.99 each they are a bit pricy but for me it’s totally worth it. Increased safety and acuracy. Here is a video covering the initial install and cut of a Leecraft HT-1 insert plate with a riving knive.