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Row_1, 0]; right_rib_x = width_mm - hole_dist_side, hole_dist_top); echo("Putting 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); // color([1,0,0] // surface("FireballSpellSmall.png", center=true, invert=false); projection(cut = true) surface(filename, center=true); } // Dinosaur Comics (alt tags+blog), CAD, attempt at OOTS (but that one uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules schematic start, and some example modules 811ef45c764021f623b8bb59234df1314fce4e91 12V, -12V and ground needed, probably up to the side echo("offsetToMountHoleCenterY: ", offsetToMountHoleCenterY); echo("offsetToMountHoleCenterY: ", offsetToMountHoleCenterY); echo("offsetToMountHoleCenterY: ", offsetToMountHoleCenterY); echo("offsetToMountHoleCenterY: ", offsetToMountHoleCenterY); echo("offsetToMountHoleCenterY: ", offsetToMountHoleCenterY); echo("offsetToMountHoleCenterY: ", offsetToMountHoleCenterY); echo("offsetToMountHoleCenterY: ", offsetToMountHoleCenterX.