Talk about these $100 splitters made me think about my $0 zero clearance throat plate and splitter. I can't see paying $100 for something I can make myself and it works. Some of you guys have more money than me!
Over look that fact that this one is crooked. I just hit with something and broke it. So I need to make a new splitter for this plate.
Here is how I make mine. I start by tracing the metal throat plate on a piece of maple I had. Plywood should work, as well as most any hardwood. I cut the blank out over sized since I want a snug fit in the opening.
I sand the radius ends, again oversized, till I get a snug fit. Once I get one like I want I can mark out more from that one. I can even take a pattern bit and the router and make more. So take your time on your master.
Once to size I plane them down so that they are flush with the table top. I have been thinking about adding some small screws to the bottom so I could adjust the height but this has worked fine for me.
Once the plate is made I switch to a smaller blade on the Unisaw. Slide the fence over the plate to hold it in place. Fire up the saw and raise the blade into the plate and its done. I use the same method for the dado inserts. Just KNOW where the blade is so you don't raise it into your fence!
For the splitter after cutting the slot, I the replace the plate with another one. I raise the blade. Place the throat plate over the blade and run the fence up against it to get my spacing. Then remove the plate, fire up the saw and feed the plate it till I have one long slot. Then it is just a matter for cutting a splitter to the right thickness. I like to hand plane mine to size. Just taper the leading edge so the part can slide past without catching. Then drill some pilot holes and screw it together.
Free and cheap. My kind of tooling.