There is something on this block that just works better. I have contour blocks, soft foam blocks, every Durablock block you can think of. longer. In combination with a 2k primer, it is possible to sand the entire panel with 1 or 2 passes. It tends to remember as it grinds back and forth along a contour. It took me a few uses and trials with this block and then it dawned on me that it works better than my other ones.
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