// PRUSA iteration3 // Configuration file // GNU GPL v3 // Josef Průša // Václav 'ax' Hůla // http://www.reprap.org/wiki/Prusa_Mendel // http://github.com/prusajr/PrusaMendel include ; include ; // Custom settings here, tailor to your supplies and print settings layer_height = 0.3; width_over_thickness = 2.2; // Select your belt type ****************************************************** //T2.5 belt_tooth_distance = 2.5; belt_tooth_ratio = 0.75; //T5 (strongly discouraged) //belt_tooth_distance = 5; //belt_tooth_ratio = 0.75; //HTD3 //belt_tooth_distance = 3; //belt_tooth_ratio = 0.75; //MXL //belt_tooth_distance = 2.032; //belt_tooth_ratio = 0.64; //GT2 there is bunch of GT2 belts with different tooth-to-tooth distance //adjust to your needs //belt_tooth_distance = 2; //belt_tooth_ratio = 0.5; // For T type belts you will probably want 0.8mm or so. belt_thickness = 1.75; // Choose bearing/bushing configuration *************************************** // conf_b_* are in inc/conf_bushing.scad bushing_xy = conf_b_lm8uu; bushing_z = conf_b_lm8uu; // for longer bearings use one shorter in x-carriage to make place for belt attachment // by default use same as xy bushing_carriage = bushing_xy; // Select idler bearing size ************************************************** // [outer_diameter, width, inner_diameter, uses_guide] // 608 [standard skate bearings] with bearing guide bearing_608 = [22, 7, 8, 1]; //608 bearings with fender washers. Not good at all, the belt brushes against the carriage bearing_608_washers = [22, 10, 8, 0]; // one 625 with guides bearing_625 = [16, 5, 5, 1]; // two 625 - for use without bearing guides. bearing_625_double = [16, 10, 5, 0]; // those two here are really good: bearing_624_double = [13, 9, 4, 0]; // this one has roughly same diameter as pulley, makes belt parallel so its prettier bearing_623_double = [10, 8, 3, 0]; idler_bearing = bearing_624_double; //Select carriage lenght // 30 for single carriage extruder (two holes with centers 30mm apart) // 50 for wade or single with fan (three holes, 30-20) // 80 for full length carriage (four holes, 30-20-30) carriage_l_base = 50; // Fillets ******************************************************************** // fillets are rounded corners of boxes. The right engineering term is probably radius // but cad software calls it fillet. // mostly cosmetic, except z axis. // 0 = no fillets // 1 = fillet // 2 = chamfer (cut the edges at 45deg. angle) // Please do put only parts with fillets on sale, other options are not really tested use_fillets = 1; //set to 0 for single plate (affects z axis and screws that attach RP parts to frame) i_am_box = 1; //if you do your own plate and can move bottom Z screws 5mm up set this to 0 to //get stronger motor mount. Only for i_am_box = 0 i_want_to_use_single_plate_dxf_and_make_my_z_weaker = 1; //radius of long threaded rod on Y frame //Use 5.4 for M10 or 4.4 for M8 y_threaded_rod_long_r = 5.4; // Thickness of the XZ plate board. Leave at 12 for single plate board_thickness = 12; // END of custom settings // You are not supposed to change this board_to_xz_distance = 26; xaxis_rod_distance = 45; //calculated from settings single_wall_width = width_over_thickness * layer_height; idler_width = (idler_bearing[1] > 7 ? idler_bearing[1] : 7) + 2.5 * idler_bearing[3] ; //deltas are used to enlarge parts for bigger bearings xy_delta = ((bushing_xy[1] <= 7.7) ? 0 : bushing_xy[1] - 7.7) * 0.9; z_delta = (bushing_z[1] <= 7.7) ? 0 : bushing_z[1] - 7.7; // CHANGE ONLY THE STUFF YOU KNOW // IT WILL REPLACE DEFAULT SETTING // RODS // threaded_rod_diameter = 0; // threaded_rod_diameter_horizontal = 0; // smooth_bar_diameter = 0; // smooth_bar_diameter_horizontal = 0; // Nuts and bolts // m8_diameter = 0; // m8_nut_diameter = 0; // m4_diameter = 0; // m4_nut_diameter = 0; // m3_diameter = 0; // m3_nut_diameter = 0; // Bushing holder // bushing_core_diameter = smooth_bar_diameter; // bushing_material_thickness = 0; ///counted stuff m3_nut_diameter_bigger = ((m3_nut_diameter / 2) / cos (180 / 6))*2; // functions include // These constants define the geometry of the complete-printer.scad //x_smooth_rod_length=325; //y_smooth_rod_length=405; //z_smooth_rod_length=235; bed_x_size=225; bed_y_size=225; x_smooth_rod_length=460+board_thickness*2; // 492 for 16mm thickness; 484 for 12mm thickness y_smooth_rod_length=470; z_smooth_rod_length=405;