the table top is supported by a central pole.
the string evens out the load on the table top.
the higher the tension the more rigid the table...
provided the central pole can support the tension.
Step 1: Materials ( not shown)
2 inch wood screws
para cord (or other strong string, or cable)
17x eye screws
1 inch pvc pipe
old satalite dish( if you dont have one of these just use some plywood)
small table top(also can be substituted with plywood)