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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 | ||
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14 | |
15 | // Extruder settings ********************************************************** | |
16 | // Don't forget to set your slicer's extruder settings to match the values you | |
17 | // enter here. | |
18 | ||
099c45e6 | 19 | layer_height = 0.3; |
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20 | // Width over thickness determines how wide the plastic will be when extruded |
21 | // onto the object that is being printed. width_over_thickness is multiplied | |
22 | // by the layer_height to calculate this width. i.e. If your layer_height is | |
23 | // set to 0.3 mm and your width_over_thickness is set to 2.2, the resulting | |
24 | // width will be 0.66 mm. | |
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25 | width_over_thickness = 2.2; |
26 | ||
27 | // Select your belt type ****************************************************** | |
28 | ||
29 | //T2.5 | |
30 | //belt_tooth_distance = 2.5; | |
31 | //belt_tooth_ratio = 0.75; | |
32 | ||
33 | //T5 (strongly discouraged) | |
34 | //belt_tooth_distance = 5; | |
35 | //belt_tooth_ratio = 0.75; | |
36 | ||
37 | //HTD3 | |
38 | belt_tooth_distance = 3; | |
39 | belt_tooth_ratio = 0.75; | |
40 | ||
41 | //MXL | |
42 | //belt_tooth_distance = 2.032; | |
43 | //belt_tooth_ratio = 0.64; | |
44 | ||
45 | //GT2 there is bunch of GT2 belts with different tooth-to-tooth distance | |
46 | //adjust to your needs | |
47 | //belt_tooth_distance = 2; | |
48 | //belt_tooth_ratio = 0.5; | |
49 | ||
50 | // For T type belts you will probably want 0.8mm or so. | |
51 | belt_thickness = 1.75; | |
52 | ||
53 | // Choose bearing/bushing configuration *************************************** | |
54 | // conf_b_* are in inc/conf_bushing.scad | |
55 | ||
56 | bushing_xy = conf_b_lm12luu; | |
57 | bushing_z = conf_b_lm12luu; | |
58 | // for longer bearings use one shorter in x-carriage to make place for belt attachment | |
59 | // by default use same as xy | |
60 | bushing_carriage = conf_b_lm12uu; | |
61 | ||
62 | // Select idler bearing size ************************************************** | |
63 | // [outer_diameter, width, inner_diameter, uses_guide] | |
64 | // 608 [standard skate bearings] with bearing guide | |
65 | bearing_608 = [22, 7, 8, 1]; | |
77f399ba | 66 | // 608 bearings with fender washers. Not good at all, the belt brushes against the carriage |
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67 | bearing_608_washers = [22, 10, 8, 0]; |
68 | // one 625 with guides | |
69 | bearing_625 = [16, 5, 5, 1]; | |
70 | // two 625 - for use without bearing guides. | |
71 | bearing_625_double = [16, 10, 5, 0]; | |
72 | ||
73 | // those two here are really good: | |
82bba690 | 74 | bearing_624_double = [13, 10, 4, 0]; |
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75 | // this one has roughly same diameter as pulley, makes belt parallel so its prettier |
76 | bearing_623_double = [10, 8, 3, 0]; | |
77 | ||
78 | idler_bearing = bearing_624_double; | |
79 | ||
77f399ba | 80 | // Select carriage lenght ****************************************************** |
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81 | // 30 for single carriage extruder (two holes with centers 30mm apart) |
82 | // 50 for wade or single with fan (three holes, 30-20) | |
83 | // 80 for full length carriage (four holes, 30-20-30) | |
84 | ||
85 | carriage_l_base = 80; | |
86 | ||
87 | // Fillets ******************************************************************** | |
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88 | // fillets are rounded corners of boxes. The right engineering term is probably radius |
89 | // but cad software calls it fillet. | |
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90 | // mostly cosmetic, except z axis. |
91 | // 0 = no fillets | |
92 | // 1 = fillet | |
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93 | // 2 = chamfer (cut the edges at 45deg. angle) |
94 | // Please do put only parts with fillets on sale, other options are not really tested | |
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95 | |
96 | use_fillets = 1; | |
97 | ||
77f399ba | 98 | // set to 0 for single plate (affects z axis and screws that attach RP parts to frame) |
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99 | i_am_box = 1; |
100 | ||
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101 | // if you do your own plate and can move bottom Z screws 5mm up set this to 0 to |
102 | // get stronger motor mount. Only for i_am_box = 0 | |
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103 | i_want_to_use_single_plate_dxf_and_make_my_z_weaker = 1; |
104 | ||
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105 | |
106 | // Radius of long threaded rod on Y frame | |
107 | ||
108 | // Affects y-axis-corner (both box and single plate) | |
109 | // and y-axis-bracket (box only) | |
110 | ||
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111 | //Use 5.4 for M10 or 4.4 for M8 |
112 | y_threaded_rod_long_r = 5.4; | |
113 | ||
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114 | |
115 | // Thickness of the boards that make the box frame. | |
116 | ||
117 | // in y-axis-corner it governs the height of the corners by adjusting the | |
118 | // distance between ground and M10 threaded rod. (both box and single plate) | |
119 | ||
120 | // For box model, the parts that hold Z smooth rod have one hole from front | |
121 | // and one from side, and this setting makes sure that the screw from side | |
122 | // is in the center of the plank. | |
123 | ||
124 | // Use 12 for single plate | |
125 | // or 20 if you want to use the Y lm8uu holders | |
126 | // (extras/bearing-holder-single-plate-y) | |
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127 | board_thickness = 18; |
128 | ||
77f399ba | 129 | // Segments of small holes. some poeple claim that a low value makes them easier to print. |
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130 | small_hole_segments=7; |
131 | ||
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132 | |
133 | // END of custom settings ***************************************************** | |
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134 | |
135 | ||
136 | // You are not supposed to change this | |
137 | board_to_xz_distance = 26; | |
138 | xaxis_rod_distance = 45; | |
139 | ||
140 | //calculated from settings | |
141 | single_wall_width = width_over_thickness * layer_height; | |
142 | ||
143 | idler_width = (idler_bearing[1] > 7 ? idler_bearing[1] : 7) + 2.5 * idler_bearing[3] ; | |
144 | ||
145 | //deltas are used to enlarge parts for bigger bearings | |
146 | xy_delta = ((bushing_xy[1] <= 7.7) ? 0 : bushing_xy[1] - 7.7) * 0.9; | |
147 | z_delta = (bushing_z[1] <= 7.7) ? 0 : bushing_z[1] - 7.7; | |
148 | ||
149 | // CHANGE ONLY THE STUFF YOU KNOW | |
150 | // IT WILL REPLACE DEFAULT SETTING | |
151 | ||
152 | // RODS | |
153 | ||
154 | // threaded_rod_diameter = 0; | |
155 | // threaded_rod_diameter_horizontal = 0; | |
156 | // smooth_bar_diameter = 0; | |
157 | // smooth_bar_diameter_horizontal = 0; | |
158 | ||
159 | // Nuts and bolts | |
160 | ||
161 | // m8_diameter = 0; | |
162 | // m8_nut_diameter = 0; | |
163 | ||
164 | // m4_diameter = 0; | |
165 | // m4_nut_diameter = 0; | |
166 | ||
167 | // m3_diameter = 0; | |
168 | // m3_nut_diameter = 0; | |
169 | ||
170 | // Bushing holder | |
171 | ||
172 | // bushing_core_diameter = smooth_bar_diameter; | |
173 | // bushing_material_thickness = 0; | |
174 | ||
175 | ///counted stuff | |
176 | m3_nut_diameter_bigger = ((m3_nut_diameter / 2) / cos (180 / 6))*2; | |
177 | ||
178 | // functions | |
179 | include <inc/functions.scad> | |
180 | ||
181 | // These constants define the geometry of the complete-printer.scad | |
182 | ||
183 | //x_smooth_rod_length=325; | |
184 | //y_smooth_rod_length=405; | |
185 | //z_smooth_rod_length=235; | |
186 | bed_x_size=225; | |
187 | bed_y_size=225; | |
188 | ||
189 | x_smooth_rod_length=460+board_thickness*2; // 492 for 16mm thickness; 484 for 12mm thickness | |
190 | y_smooth_rod_length=470; | |
191 | z_smooth_rod_length=405; |