I'm just finishing an outdoor table made from cypress. The top is a 24" doughnut 2" wide and 7/8" thick with cypress slats floating in the center field. The circle is made from 5 arc segments biscuited and glued. The base is a tradtional 4 legs with aprons between forming a square slightly less than the top's 24".
Now the question: How to attach the top to the base. Indoor tables, I've used metal "Z" clips screwed to the top and into a dado in the aprons. These & metal "figure 8" desk clips will rust outside. Thinking of (KISS) four small dowels into the tops of the legs and bored and glued into the underside of the doughnut. No rust ... no metal. Other alternative would be stainless steel deck screws through pocket holes in the aprons. Neither of these would really allow for wood movement, but do I really have movement in a circular top?
Any suggestions or recommendations would be greatly appreciated, It's finally spring and the table needs to leave the shop and reside on the deck.
PS- FYI Cypress chairs from last year spent winter outside finished with Penofin and seem none the worse for wear except for a few black stains on some horizontal surfaces from fallen oak leaves.