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@retrodirect/glowbike
These 3 plates cad'd up quickly to prove the idea worked. A proper version TBC.
I wanted to use 3d printer wheels to ensure there was no slop in a plate which could both slide and have an angle adjust. usually with 8020 as you loosen a bolt the whole plate will become loose in the slot and weeble wobble about in all planes. the wheels limit the degree of freedom to 1. they're adjustable on eccentric nuts to take up any slop.