|Project by brianb6603||posted 01-12-2015 05:31 AM||2266 views||9 times favorited||5 comments|
I have had my R4512 for about a year and am generally happy with it. I added a Biesemeyer fence at the beginning and a folding out feed table (see my other post about it). My son-in-law bought me a Wixey fence gage which is working out better than I hoped. For the money it is a very good saw.
However making a custom throat plate for this saw is a pain and buying a commercial one can be expensive. I did buy one for standard blades and it works as expected, but I use a dado set often and was not looking forward to spending another $27.00 for each dado width. In the meantime I have been using the original steel plate. this allows up to a 3/8” dado.
So I started thinking about how to go about making one myself. the saw throat opening has projections for the leveling screws but they are only 3/16” below the table surface. The leveling screws are designed to support a 1/8” steel plate. In order to use a 1/2” phenolic or plywood plate it is required that you make a clearance notch for each of these projections. This means you need 2 templates, one for the top to drill the leveling screw holes and layout the outside dimensions and a second one to lay out the projection cutouts. I used the commercial throat plate as a template. I hot glued 1/4” MDF to the bottom of the plate then used a top bearing pattern bit in my Router table to get the shape. I then adjusted the template cutouts 3/32” oversize so i could use a 1/4” straight bit and 7/32” guide bushing. This allows me to take some material away and then remove the template and reroute to final thickness (that why there is a step visible in photo 3). I also made a template to cut a recess for the rear anti lift tab. Now I have my templates made and I can make as many as I need.
The throat plates is made of Melamine covered plywood i had left over from my chop saw table. It is the cheaper kind made for concrete forms. Next time I will try to get the nicer baltic birch type.
Thanks for looking,
-- Brian Brown, Eugene, OR