Plain old Elmer's Wood Glue. Lots of it... t1.jpg
It's very important to spread the glue out evenly. t2.jpg
Clamping with even pressure will assure a good grip. The turntable itself is made up of three layers. The top is 3/4" ply. So is the middle, but this layer is 4" smaller the the top & bottom. The bottom layer is 1/4" ply. t3.jpg
Christina is laying out the casters in a circle. The base is a 6'x6' platform framed with 2x4 and covered with 3/4" ply. The casters are being placed on the base with the wheels facing up. The round turntable will sit on top. In the center will be a hole for a guide center pin.
t4.jpg
Christina is laying out the casters. Notice she is using a long straight edge (a 6' level) to make sure the wheels are parallel to each other and thus, perpendicular to the pivot point. You can also do this using a simple piece of string and lining up the center bearing pin of the wheel to the string. t5.jpg
I'm not sure this will work, but the photo here is a link to a MPEG video file. It's just under 3 megs in size and you'll need some sort of video player plug in working... turn001.jpg
Rico is fitting the drive wheel to the turntable's base platform. This will have a handle attached and will be connected to the turntable via 1/8" cable. t6.jpg
  t7.jpg
The casters are placed to help guide the drive wheel. Otherwise, the drive wheel would keep popping up out of the hole drilled into the platform below. t8.jpg
  t9.jpg
The cable would keep slipping on the wooden wheels so we had to add some tension. The turnbuckle and pulley allowed us to vary the tension as needed. t10.jpg
  t11.jpg
  t12.jpg