Re: Delrin ball carriage for mini kossel question

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RDM6
I need a little clarification on terms. Is V-slot the same as 20 x 20 mm rails?

V-slot is a custom 2020 extrusion, where the slot is V-shaped and not a straight cut. It was designed for linear motion applications:

http://openbuildspartstore.com/v-slot-20-x-20mm/

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And the open builds solid V wheel kit can only be used on 2020 extrusions, not my 1515s?

The slot on the 1515 is significantly narrower, so the big wheels will not fit inside the groove. The V-wheels are also iffy on T-slot 2020, as they were really intended to ride in a V-slot. Mine are working (barely) on Misumi 2020, but I also have the V-slot extrusions that I ultimately plan to salvage from my first RepStrap delta printer as a long-term solution.....