| 1 | // PRUSA iteration3 |
| 2 | // Configuration file |
| 3 | // GNU GPL v3 |
| 4 | // Josef Průša <josefprusa@me.com> |
| 5 | // Václav 'ax' Hůla <axtheb@gmail.com> |
| 6 | // http://www.reprap.org/wiki/Prusa_Mendel |
| 7 | // http://github.com/prusajr/PrusaMendel |
| 8 | |
| 9 | include <inc/metric.scad>; |
| 10 | include <inc/conf_bushing.scad>; |
| 11 | |
| 12 | // Custom settings here, tailor to your supplies and print settings |
| 13 | |
| 14 | layer_height = 0.3; |
| 15 | width_over_thickness = 2.2; |
| 16 | |
| 17 | // Select your belt type ****************************************************** |
| 18 | |
| 19 | //T2.5 |
| 20 | belt_tooth_distance = 2.5; |
| 21 | belt_tooth_ratio = 0.75; |
| 22 | |
| 23 | //T5 (strongly discouraged) |
| 24 | //belt_tooth_distance = 5; |
| 25 | //belt_tooth_ratio = 0.75; |
| 26 | |
| 27 | //HTD3 |
| 28 | //belt_tooth_distance = 3; |
| 29 | //belt_tooth_ratio = 0.75; |
| 30 | |
| 31 | //MXL |
| 32 | //belt_tooth_distance = 2.032; |
| 33 | //belt_tooth_ratio = 0.64; |
| 34 | |
| 35 | //GT2 there is bunch of GT2 belts with different tooth-to-tooth distance |
| 36 | //adjust to your needs |
| 37 | //belt_tooth_distance = 2; |
| 38 | //belt_tooth_ratio = 0.5; |
| 39 | |
| 40 | // For T type belts you will probably want 0.8mm or so. |
| 41 | belt_thickness = 1.75; |
| 42 | |
| 43 | // Choose bearing/bushing configuration *************************************** |
| 44 | // conf_b_* are in inc/conf_bushing.scad |
| 45 | |
| 46 | bushing_xy = conf_b_lm8uu; |
| 47 | bushing_z = conf_b_lm8uu; |
| 48 | // for longer bearings use one shorter in x-carriage to make place for belt attachment |
| 49 | // by default use same as xy |
| 50 | bushing_carriage = bushing_xy; |
| 51 | |
| 52 | // Select idler bearing size ************************************************** |
| 53 | // [outer_diameter, width, inner_diameter, uses_guide] |
| 54 | // 608 [standard skate bearings] with bearing guide |
| 55 | bearing_608 = [22, 7, 8, 1]; |
| 56 | //608 bearings with fender washers. Not good at all, the belt brushes against the carriage |
| 57 | bearing_608_washers = [22, 10, 8, 0]; |
| 58 | // one 625 with guides |
| 59 | bearing_625 = [16, 5, 5, 1]; |
| 60 | // two 625 - for use without bearing guides. |
| 61 | bearing_625_double = [16, 10, 5, 0]; |
| 62 | |
| 63 | // those two here are really good: |
| 64 | bearing_624_double = [13, 10, 4, 0]; |
| 65 | // this one has roughly same diameter as pulley, makes belt parallel so its prettier |
| 66 | bearing_623_double = [10, 8, 3, 0]; |
| 67 | |
| 68 | idler_bearing = bearing_624_double; |
| 69 | |
| 70 | //Select carriage lenght |
| 71 | // 30 for single carriage extruder (two holes with centers 30mm apart) |
| 72 | // 50 for wade or single with fan (three holes, 30-20) |
| 73 | // 80 for full length carriage (four holes, 30-20-30) |
| 74 | |
| 75 | carriage_l_base = 50; |
| 76 | |
| 77 | // Fillets ******************************************************************** |
| 78 | // fillets are rounded corners of boxes. The right engineering term is probably radius |
| 79 | // but cad software calls it fillet. |
| 80 | // mostly cosmetic, except z axis. |
| 81 | // 0 = no fillets |
| 82 | // 1 = fillet |
| 83 | // 2 = chamfer (cut the edges at 45deg. angle) |
| 84 | // Please do put only parts with fillets on sale, other options are not really tested |
| 85 | |
| 86 | use_fillets = 1; |
| 87 | |
| 88 | //set to 0 for single plate (affects z axis and screws that attach RP parts to frame) |
| 89 | i_am_box = 1; |
| 90 | |
| 91 | //if you do your own plate and can move bottom Z screws 5mm up set this to 0 to |
| 92 | //get stronger motor mount. Only for i_am_box = 0 |
| 93 | i_want_to_use_single_plate_dxf_and_make_my_z_weaker = 1; |
| 94 | |
| 95 | //radius of long threaded rod on Y frame |
| 96 | //Use 5.4 for M10 or 4.4 for M8 |
| 97 | y_threaded_rod_long_r = 5.4; |
| 98 | |
| 99 | // Thickness of the XZ plate board. |
| 100 | // Use 20 for single plate if you want to use the Y lm8uu holders |
| 101 | board_thickness = 12; |
| 102 | |
| 103 | // segments of small holes. some poeple claim that a low value makes them easier to print. |
| 104 | small_hole_segments=7; |
| 105 | |
| 106 | // END of custom settings |
| 107 | |
| 108 | |
| 109 | // You are not supposed to change this |
| 110 | board_to_xz_distance = 26; |
| 111 | xaxis_rod_distance = 45; |
| 112 | |
| 113 | //calculated from settings |
| 114 | single_wall_width = width_over_thickness * layer_height; |
| 115 | |
| 116 | idler_width = (idler_bearing[1] > 7 ? idler_bearing[1] : 7) + 2.5 * idler_bearing[3] ; |
| 117 | |
| 118 | //deltas are used to enlarge parts for bigger bearings |
| 119 | xy_delta = ((bushing_xy[1] <= 7.7) ? 0 : bushing_xy[1] - 7.7) * 0.9; |
| 120 | z_delta = (bushing_z[1] <= 7.7) ? 0 : bushing_z[1] - 7.7; |
| 121 | |
| 122 | // CHANGE ONLY THE STUFF YOU KNOW |
| 123 | // IT WILL REPLACE DEFAULT SETTING |
| 124 | |
| 125 | // RODS |
| 126 | |
| 127 | // threaded_rod_diameter = 0; |
| 128 | // threaded_rod_diameter_horizontal = 0; |
| 129 | // smooth_bar_diameter = 0; |
| 130 | // smooth_bar_diameter_horizontal = 0; |
| 131 | |
| 132 | // Nuts and bolts |
| 133 | |
| 134 | // m8_diameter = 0; |
| 135 | // m8_nut_diameter = 0; |
| 136 | |
| 137 | // m4_diameter = 0; |
| 138 | // m4_nut_diameter = 0; |
| 139 | |
| 140 | // m3_diameter = 0; |
| 141 | // m3_nut_diameter = 0; |
| 142 | |
| 143 | // Bushing holder |
| 144 | |
| 145 | // bushing_core_diameter = smooth_bar_diameter; |
| 146 | // bushing_material_thickness = 0; |
| 147 | |
| 148 | ///counted stuff |
| 149 | m3_nut_diameter_bigger = ((m3_nut_diameter / 2) / cos (180 / 6))*2; |
| 150 | |
| 151 | // functions |
| 152 | include <inc/functions.scad> |
| 153 | |
| 154 | // These constants define the geometry of the complete-printer.scad |
| 155 | |
| 156 | //x_smooth_rod_length=325; |
| 157 | //y_smooth_rod_length=405; |
| 158 | //z_smooth_rod_length=235; |
| 159 | bed_x_size=225; |
| 160 | bed_y_size=225; |
| 161 | |
| 162 | x_smooth_rod_length=460+board_thickness*2; // 492 for 16mm thickness; 484 for 12mm thickness |
| 163 | y_smooth_rod_length=470; |
| 164 | z_smooth_rod_length=405; |