|Project by LJackson||posted 03-04-2015 03:23 AM||2125 views||0 times favorited||2 comments|
I have created a zero clearance throat plate for my table saw, a Craftsman 21829, similar to the Ryobi BT3100. I had discovered that 1/8 inch plywood, specifically the small square of it that you can get at the crafts store (Michael’s), is the perfect thickness for my table saw. The existing throat plate is slightly thinner, and sunk into the table just a bit. Also, it’s opening is massive. Maybe it should be called an infinity clearance throat plate.
The one problem with the 1/8 inch plywood, is that it makes bananas look straight. So, I glued it to a piece of 3/4 inch shop-grade plywood. As depicted in the photos, I needed to cut off the corners and route out a bit of the wood for clearance.
I’m pretty happy with the way it turned out. There are a few edges where the plywood just sticks above the table, and if you press, it will push down flush. Unfortunately, one of those edges is the leading edge. So, I just chamfered the edges.
It seems that there’s always the epilogue of “If I had to do it again, here’s how I’d change it,” and it is no different with this small project. You can see in the pictures, that there is a small gap to one side of the plate, and that gap is also there on the original insert. I would cover that gap next time. Also, instead of cutting off the corners of the 3/4 inch plywood, I would just route them thin enough to clear the bosses in the table, to give the 1/8 inch ply as much surface area to adhere to as possible at the extreme ends.
Finally, I would use baltic birch plywood that hasn’t been sitting outside for the entire summer getting all warped and twisty, like I did with this 3/4 shop plywood. Okay, so a small piece isn’t that bad, as evidenced by my relative success, but I’m sure a better taken care of piece of wood would have worked well.