I got 8" pneumatic tired casters, 2 fixed, 2 swivel. Bottom of tire to top plate is about 12". The rocker height is a good thing to consider! Maybe make it adjustable, say 12" to 24" +/-? Hmmm... I don't mind spending a little more for a metal one as I can always cut it up and recycle to make a different size frame as needed for future projects.

I'll have to look at Webshots from home computer.

THANKS Thinkers! Buddy

"Keep the shiny side up....."
'50 GMC Suburban
'55 1st Chevy Pickup
http://community.webshots.com/user/buddyinak