Hey Guys
Has everyone lost interest?I have not.We were getting some where.
Now we know the aggregates are a commody product,you can get locally at building supply or landscaping places,cheap.If 80 to 90% fill is obtainable,we have a very low cost damping material.On premixed epoxy grouts,I don't know,but it is better than nothing.
Our aggregate mix could be playsand [appears to be clean and fine& smooth]builders sand or sharp sand and pea gravel.3 grades mixed should be enough.Interestingly I found on the web E/G has better properties for damping than solid granite.I think the 90% ratio is hard to acheive for the home guys.The big companyies with huge vibrating tables can get these ratios,but the main reason would be for low cost.
Previous posts have said this was for us woodrouter guys not milling machines.Not true!I dont know much about milling machines etc,but if your coloum is filled with E/G it will provide damping.Vibrations are reduced or eliminated by combining different materials in a structure.Each material has a different resonance and combining two or more materials will tend to cancel unwanted vibrations.With or E/G we have 3 different aggregate sizes + epoxy +the machine base material steel or aluinium,resonating at different frequencyies tending to cancell one another.Result less chatter.I am not proclaiming to be an expert on the subject,I am sure it is new techonolgy.My knowledge pertains to "fake granite counter tops"which is simmilar except we had much lower ratios.We had to mix in a vacuum and do the shaking thing.
Posts have helped me to new ideas.I want to build a6'X12' router table and have studied the Zone for many months.I don't see how anyone could have a steel tube machine.I must ring like a bell.I am long winded,hope you don't mind long posts.Lets try to keep this thread alive.Post questions or answers.
Larry
Granite chip sweeper