ORIGINAL: rexbirk
MTK,
Explain your soft mount to me. I looked at your post of it's construction. From what I see the rubber around the outside of the mount is what holds the two plywood discs together. What is the purpose of the balsa core?
Balsa core spaces the plywood discs apart so you have an area of rubber that absorbs vibration and helps prevent gluing the plywood together during assembly.