Hey Salty, for a simple build table I went to the local metal supply company and got two pieces of 1" steel sq tube 1/8" thick four feet long. Went to Home Depot and purchased a 2 ft x 8ft long wide piece of white malamine and had them cut it down to 6 ft long. Home Depot also has 4 x 8 sheets of sound proofing that's 1/2" thick cuts easy with utility knife. I took some push pins with me to test between the ceiling tiles and the sound prof board and IMHO the pins stick way better in the sound board.

Place the 2 pieces of steel tube on under the malamine, then cut the sound proofing board to fit on top of the malamine. The sound proof board is great for building on and an added benefit is with the malamine you have a smooth surface to copy or trace plans

Bryan