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Rod, I was leaning towards the 150mmm PVC pipe cap and teflon for the altitude bearings.
If the tape you mention is, I presume, the moving surface, what are your stationary surfaces? Teflon?
Ian[/QUOTE]
Hi Ian, yes Teflon for the stationary surface. PVC endcaps will work ok too but I find PVC a little stiff.
The other option is to use a smooth laminate and a combination of roller bearings and one or two Teflon pads. I did that before I motorized my mount and was very happy with the result.
Rod.
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