Springs for homemade isolation stand


I want to suspend my granite top from my Sound Anchor rack w. some springs to create an isolation stand. I have about 100 -200 lbs of equipment on the granite top including a turntable. I was wondering if anyone can recommend a source for the springs that can support the weight & control resonance.
dgad
To funny Stehno! When I was a kid, I ran around the house with a tampon, and a cigarette lighter, threatening everyone in the house that I was going to blow the place up! lol All the women were blushing, and my uncle just about fell on the floor, dying of laughter! Ahh, the crazy thing you do when you're a kid.

Yes though, I agree, a person with a little ingenuity, and thought, can devise very marvelous devices with next to no cash outlay.

I still haven't made my own Home Depot Sand base as of yet, but plan on doing so in the future. I figure for $20 worth of materials, and a bit of time, there's not much to lose if the project is a disaster. Mark
Darren a simple & proven solution is bubble wrap. Get the pink / red colored antistatic type (for longevity) place a sheet flat between the entire slab and your rack top. The sealed bubbles act as isolating springs & can hold the weight because you're using an entire sheet
I might try the bubble wrap. I am using Stillpoints under my turntable. The sound improved w. deeper bass & improved clarity. I just feel that a good isolation stand improves a system substantially. I don't want to spend hence the idea of using springs. If any of you have seen the Machina Dynamica or the Minus K they use springs to isolate. Sounded interesting if I could make my own. I agree about the dissimilar material idea & even the car tube. The bubble wrap sounds interesting in a cost perspective. I will pick some up & post my results once I get it done. My turntable w. the base from the Sound Anchor stand is over 200 lbs at least. Now to find some friends to help lift it.
I had Koni's on my car when I was a kid. They were great new but after a bit of use they softened up and were a little mushy. I always thought I should have changed my springs as well.

Take a look at the Minus K stands. They only use springs. It is amazing how effective they are based on the video.