My girlfriend wanted to build a fluted table, which meant she wanted me to build a fluted table... and since I needed to justify buying a 3d printer, I made this jig

All the other methods of making these types of tables are either expensive or they eyeballed the flutes.

This jig makes it easy to get circular and upright flutes without much effort. Print 2 of these, put them on the top and bottom of your 1" Pvc (not schedule 40), and you can easily glue the PVC together.

While I don't recommend using the jig as part of your design, its totally possible to just screw the jig to the table top and glue the jig to the PVC.

Its approximately 8" in diameter which works well with the premade tops from HomeDepot