Folger Tech Kossel Top Vertex Aluminum 2020 Caps

thingiverse

I did not like the idea of the sharp corners protruding from the top, so I designed these little caps to cover them. My vertical 2020's are 20mm above the top, so I made these with 21mm cut on the inside to make sure they fit. I tapered the inside square cut up to a point so there was no problems printing above the cut. You can adjust the height of the inside cut if your verticals are a different height about the vertex by changing the variable Alum_Ht = 21; to the height you need in the openscad file. The Aluminum vertex parts have a nice convenient hole on each side that made it easy to use a screw to hold the top cap in place with a base plate at the bottom of top vertex. Print one VertexTopCap_Rev5.stl & VertexTopBasePlate_Rev5.stl for each vertex & use 2x M3x30mm screws with locknuts for each cap. There is a VertexTopBasePlate_3x_Rev5.stl file if you want to print all 3 base plates at once. The way I got verticals to the 20mm above the vertex was to use a 40mm plastic spacer jig (Top40mmJigSpacer.stl) to set the top of the endstops before putting on the top aluminum vertex parts. That way when I put the top on the verticals, they were all within a 1/2mm of 20mm above the top. I included a photo of how I did that. An openscad file is included for the Top caps & the spacer jig. The Top Cap & Base Plate are created from the same openscad file. On the base plate there is not much plastic holding the 2 sides together, but that was what matched the aluminum vertex profile & they are really only needed to hold the bolts in place from the top. I printed these with 30% honeycomb infill using to get a better honeycomb looking pattern for visual appeal. You should be able to print these at 20% or less fill.