I've been working away like crazy to get my project cue caught up. Yesterday I built a large diameter circle cutting jig for my table saw which enabled me to cut 2 - 24" diameter circles out of Baltic birch plywood for a photography prop project that was requested. This jig worked like a charm! Check out some photos below:
I made a maple miter slot bar that I glued to the bottom of a piece of 3/4" thick mdf and then screwed it to the rail once the glue was set. I'll go into more detail in my tutorial. I set the radius of the circles that I needed and used a cut off finishing nail to drill my holes to insert the centering pin.
I drew the layout of the circle shapes I want after marking center. The hard part was putting the board onto the centering pin but it doesn't take long if you center punch the center point so the nail falls into the center point.
I spin the material with the blade below the surface of the jig and turn the saw on raising it about a 1/16" or 1/8" with each spin.
CAUTION: this type of cut makes a TON of sawdust so be sure to have good dust collection and a respirator.
Done! I made two 24" diameter perfect circles and spent the rest of my time cleaning up the dust in the shop. Next cuts I make with this jig will be with the table saw face plate removed so I can utilize the dust collection hooked to the table saw better..
I'll post a YouTube video of the jig build and more photos of this project build soon! Thanks for checking out my work and supporting me by clicking on the ads. Every little bit helps and hopefully you find value in the project work that I do!