C) Remove the bearing to prevent contamination from sawdust and predrill all holes. Drill the access holes in your base plate.

How toinstall aLazy SusanBase Cabinet from Home Depot

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How toinstall alazy Susanin an existing corner cabinet

B) (Optional) Lubricate bearing balls with oil or grease (depending on freedom of rotating action wanted). This will help with noise reduction.

A) Use the smallest holes in the bearing as a template to mark turntable for blind fastening. Drill these holes for self-tapping sheet metal screws.

ALTERNATIVE is to use speed nuts on the bearing and assemble the top turntable plate with #10 flat head screws (don't forget to countersink)