The table I’m building has a 7 foot diameter round,honduras mahogany top made from glued up boards. I’m thinking of making a flush mounted lazy susan by cutting out 3 foot circle in the center and remounting the cutout wood on bearings so that it revolves. I’m concerned about the relationship between the seasonal wood movement of both the tops and the resulting revolving clearance problems. If wood moves only cross grain, won’t the circles be seasonally out of round precluding a flush mounted revolving application? Help…I’m confused…as usual!! I saw a picture of a similiar table made by Sam Maloof so there must be a way….
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Yes, cirles cut from solid wood will not be circles at various times of the year. The wood will expand/contract across the grain and not with the grain. Not only will the circle you cut out change, but the inside of the circle left in the larger piece will also change.
Your 3' circle will expand and contract between 1/4 - 1/3" with normal summer to winter humidity changes.
The way most tables like you plan are made is with a manmade substrate like plywood, particleboard or MDF. The substrate is then covered with hardwood veneer.
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