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Back// cube([137.5, 97, 1], center=true); echo("Putting a hole with radius: ", hole_r , " at ", width_mm - col_right - thickness; // additives - labels, etc // one more to mount a circuit board to, dead center v_wall(h=4, l=top_row-rail_clearance*2-thickness-15); // PCB holder pcb_holder(h=10, l=top_row-rail_clearance*2-15-thickness, th=1.15, wall_thickness=1); // lower h-rib reinforcer ## Photos [to be added] ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf * [How to use](Docs/use.md 96f746fa2d Final tweaks, version submitted to JLCPCB on 20240124 3d279dd88c Finish schematic, add PDF.
- 9.695134e+01 1.105996e+01 facet normal 0.865135 -0.354642 0.354642.
- 0.555569 4.76779e-07 facet normal.
- Between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, CR1220.
- Normal 0.741148 -0.224824 0.632577.