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Thus, it is safe to put reinforcing walls; i.e. The thickness of the knob. [mm] sphere_indents_cutdepth = 3; radius_of_cylinder_indentations_bottom = 5; //mm left_col = 10 + center_adjust; right_col = width_mm - h_margin; cv_in = [h_margin, row_1, 0]; pwm_in = [first_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_4, 0]; pwm_cv_lvl = [second_col, fifth_row, 0]; square_out = [third_col, fourth_row, 0]; triangle_out = [third_col, fifth_row, 0]; //left_rib_x = thickness * 1; right_rib_x = width_mm - thickness*2; left_rib_x = thickness * 1; right_rib_x = width_mm - right_rib_thickness; // projection: make a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin - title_font_size*1.5; // surface("FireballSpellSmall.png", center=true, invert=false); } module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt) { cord=(cod+cdp+cdp*smt/100)/2; cird=cord-cdp; cfn=round(2*cird*PI/cwd); clf=360/cfn; crn=ceil(chg/csh); echo("knurled cylinder min diameter: ", 2*cord); echo("knurled.

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