Using a template to create a subtle curve to the edges and parabolic curve for the edge treatment
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Using the Makita track saw and dust extractor to square up the table top panel
To create the multi-curve edge treatment I first needed to square up my table top panel glue up to have nice reference edges on both long and short sides. To do this I used the Makita 18-Volt X2 LXT (36-Volt) 6-1/2 in. Plunge Circular Saw with 55 in. Plunge Saw Guide Rail. A track saw is a great way to produce clean crisp edges on long panels that would otherwise be cumbersome or dangerous to do on a table saw. I also paired this with the Makita 18V X2 LXT (36V) 2.1 Gal. HEPA Filter Dry Dust Extractor for almost dust free cutting.
Crisp, clean, tear-out free cut with the Makita track saw
Next, I trace out the template that I made (refer to my previous blog post on how to make templates) to create the subtle curve on the squared up table top. With the template placed to the side, I’ll then rough out this shape using a jigsaw (also known as a saber saw) making sure to leave about 1/8” proud of my pencil line.
Tracing out the curve of my template onto the table top. Having square edges makes sure the template is perfectly aligned.
Roughing out the shape of the curve using a jigsaw
I’ll then clamp down the template making sure I’m placing the template back to the original line. To create the parabolic edge I used an oval edge router bit (Whiteside 1480) with a ball bearing (Whiteside B16) and lock collar (Whiteside LC-1/2). The bearing will ride along the template as a guide and the router bit is offset to give the edge a parabolic shape as opposed to an even round-over.
Whiteside 1480 with a B16 ball bearing and LC-1/2 lock collar
Using the template as a guide for the router bit
Lastly, I use a spokeshave and sandpaper with a flexible backer to ease the sharp edges.
Spokeshave quickly removes the sharp edges
Sandpaper with a flexible backer smooths the edges