Where exactly do you find the cylinders for this?
I get them from a place called W.G.V. International, about 20 minutes from where I live.
About that mold experiment from earlier - wood has anti-microbic/anti-fungus substances in itself. Wood is dead material which means the tree can't really react if it gets infected so it has to deposit substances inside it before the cells die. By sterilizing it you may very well wash out or destroy these substances.
Also while working with wood clean hands and clean equipment are VERY important. Most of the mold is actually brought in when the wood is worked on.
Yeah I concluded the main reason wood molds so bad after sterilizing it, is the lack of springtails and other organisms that feed on fungus.