They have 4 rubber screw-in feet. You might try 3 cones or feet for your design. They also include 4 1/2" cross section foam strips that press fit around the plinth to contain the sand. Hammerite paint might look cool. You might need to add a primer/sealer on the MDF though. Other options could be black texture paint or custom hardwood. Match or contrast with the wood on your turntable.
5 responses Add your response