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How can I view a 5-year-old discussion?

Further update: I have taken photos showing how the flanges move, and how the assembly changes position for control. Background (fabric cutting board) has 1" squares. Meanwhile, I discovered an online copy of the instructions for my unit, with decent sketches showing how it works. It even has the belt lengths for me! See

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. Input is at top left groove; intermediate lower left to upper right, and output from lower right groove. The device is called a Savage "Vari-Slo". Looks like it was also sold as Craftsman or King-Seeley. And, the bearings use GREASE, answering the original post!