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H_margin; working_height = height - v_margin - title_font_size*2; working_width = width_mm - h_margin; out_row_1 = v_margin+12; row_2 = row_1 + v_margin + 12; //knob_radius top_row = height - v_margin - title_font; left_rib_x = thickness * 1; //right_rib_x = width_mm - thickness*2.5 - tolerance*6; left_rib_x = 0; right_rib_x = width_mm - thickness*2; left_rib_x = thickness * 1; //right_rib_x = width_mm - thickness*2.5 - tolerance*6; out_row_1 = v_margin+12; row_2 = row_1 + v_margin + 12; top_row = height * rotate_vector_cos; points = [ [left_edge, rotate_vector_cos * rail_depth], // top horizontal rib // middle horizontal rib h_wall(h=4, l=right_rib_x); // middle-bottom h rib 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) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md ## GitHub repository https://github.com/holmesrichards/precadsr Submodules Latest commits for file sr1_full.png.

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