As the throat plates for my Ryobi TS1352 Compound Miter Saw are discontinued, I created this design as a replacement.
This is a drop-in replacement, and can be printed in ABS or PLA. Just be aware that PLA may not stand up to tons of direct sunlight in the heat.
Update: I added a Zero Clearance version, which is basically the same with no slot cut. The downside is that you may want to print it with 100% (or nearly 100%) infill, as you'll be using your saw to cut the slot you need. I also recommend using ABS for the Zero Clearance version if you can, as it'll cause less wear on your blade than PLA.
This is best with a shell thickness of about 1.2mm or so, and a moderately high infill.