The finished coffee table is a bit of a stylistic mix: the top is a bit mid century modern while the legs are somewhat Greene & Greene. The build is solid walnut, finished in Rubio Monocoat Pure, and the top has an additional finish of Method Carbon's ceramic nano coat for additional protection. For this project, I didn't have any plans but just worked off the top of my head...

The first step was making a template for the top. I used some OSB to make a template for half the top. Using an aluminum straight edge with strings and clamps, I bent it to create a curve that was used for both the sides and ends, and a small can to round the corners. After drawing the lines, a saber saw was used to cut to the lines. Next was a belt sander to get down to the lines and finally hand sanding to smooth out the curves. 

Just a quick shot of the lumber: 5/4, 4/4 walnut, along with some 3x3x18 walnut turning blanks.

The top was glued up in two sections. Liquid hide glue was used for this project.

The template was used to draw a line, a saber saw to cut close to the line, and finally a router with a flush trim bit which followed the template to reach the final size of the table top. Some sanding smoothed out a few minor imperfections that I didn't notice in the template.

The top after the first application of Rubio Mono coat. I've found that on walnut, two or three applications are necessary.

Six steel inserts, three at each end, in the underside will secure the top to the bask. The center insert will mate to a standard size hole for its brass screw, while the two outer screws will fit into slots in case humidity changes cause and width changes in the top.

Since I was using slanted legs, with a castle joint, I made a quick jig to hold the legs while cutting the slots on a band saw.

Dry fitting the rails.

Dry fitting the legs.

Legs and rails now glued, and Rubio applied.

Just a view that helps to show the angle of the legs which is about 10 degrees.

Since this will be sitting on a somewhat thick carpet, I made glides from 12mm UHMW to fit on the bottom of the legs.

Cutting and routing is really nice with this material.

The only issue with machining this material is that in drilling the holes for the screws, it came off in long strands that wrapped around the drill bit.

A view of the base's retainer strip for the top. The center hole doesn't allow movement to keep the top aligned while the two outer holes are elongated to allow some expansion/contraction of the width of the top.

Felt pads were added between the base and rails. 

Just a view of the leg/rail joint.

Brass retention screws for the top to base connection.

The edge's top has a 1/8" round over, while the bottom is a 15 degree bevel. Hand sanding was used to soften the transition between the vertical edge and the bevel, and the bevel and the bottom.