I made it at Techshop: http://www.techshop.ws
Step 1: Materials and Equipment
1/2 inch plywood (About 25x36 inches) - I used 12mm Baltic Birch
1/2 inch dowel (about 36 inches)
Varnish or other finish (I didn't bother)
1/4inch router bits (1 upcut, 1 downcut)
3/4 inch router bit(s) (optional, to speed up cutting out the larger holes)
saw for cutting dowel inserts (I used a chop saw)
Laser cutter (optional - for cutting the stop rings for the dowels)
Step 2: Design
The divider size needed to be adjustable to accommodate both rod tubes and sock, and to allow the organizing of the rods by user preference.
The rack had to be light and have some sort of handle to make it easily liftable, so that it would be practical to tuck multiple racks in a closet. I decided to make the divider/ insert function as a handle.
I drew the design directly up in the CAM program (Vcarve 6).
I have included a PDF for the design, but it will need to be adjusted to accommodate the exact thickness of the plywood selected. Since my shop has a laser printer, I cut the divider insert (dowel) rings out of MDF on the laser, but these could be added to the cut file for the CNC instead. If you want to go for something more fancy, you can cut caps instead of rings.
Step 3: Cut and Assemble
Sand the parts, and dry fit.
Now glue the rack together and clamp. I also used some brad nails to facilitate clamping.
Measure assembled rack for dowel insert length (don't forget to account for the cap/ring)
Cut dowels. For each section: round the edge on one side and glue the cap/ring on the other.
If desired, fill any tear-outs and brad holes and - apply finish to rack (I didn't bother) sand dowel holes as needed to get a snug fit.