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I agree with Capesam that you do not want it too slippery. However, you want it smooth. Think in terms of a reel drag. Whatever the resistance you want it to be consistant. This is after all a guided hand tool. On mine I have waxed bare wood sliding over formica. It is smooth but has some reistance to help me guide the tool. However, it is floating, and if it grabs, the blank is usually gouged or split and gone before I can react. The resistance my hands apply can only keep the tool from flying through the air, causing further damage to anything else, including me. Paul's tool holder, being made out of a large chunck of aluminum, is heavier than most, and the mass might help when things go wrong. They go wrong on the commercially made duplicators as well, just not as often. That face sheild discussed in another post is a good idea.
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