I made this coffee table from a recycled solid, clear fir door (Second Chance, $20) and maleable black iron plumbing pipe (Home Depot). There are several configurations for the pipe base, but I think this one looks good.
New pipe is not cheap and I've not found a supplier of used pipe. I paid about $180 for the pipe - yikes. Search online for better prices.
As for the door, I set it on saw horses, cut it into parts with a Skil saw, sized the parts and cleaned up their edges on the table saw. I had wood left over. Biscuits, glue, and clamps overnight. Planed flat and sanded to 220g. Finished with 1 coat of boiled linseed oil and 4 coats of oil based polyurethane.
Because of the way I put the top together, I needed to strengthen it with a 36" length of 1-1/2" angle iron underneath. I first sprayed on a few coats of black Rustoleum, let it dry. Then I drilled 8 oversized holes down its length and screwed the iron to underside with 1" pan head screws. The table top extends past the end of the angle iron about 3-1/2" on each end, so you don't really even know its under there.
Connect the pipe frame to the underside of the wood top via 4 floor flanges, positioning their centers about 4" in from the side and 5" in from the end. These measures will differ for different sized tops.
For the feet, you can go with flanges or caps. Add felt pads to the feet if the table will be on a wood floor.
Tabel top = 43" long x 22" wide x 1-1/4" thick
Table top surface = 17" from the floor
Center to center of legs length = 33-1/2"
Center to center of legs width = 14"
Black Pipe Fittings Needed:
(4) 1" x 10" nipples ($21)
(4) 1" x 1-1/2" nipples ($8) <-- this may actually be a 2" nipple
(4) 1" x 2-1/2" nipples ($10) <-- this may acually be a 3" nipple