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// PRUSA Mendel
// Mini X-carriage for Ultimaker Bowden Extruders
// Used for sliding on X axis
// GNU GPL v2
// Rob Gilson, Josef Průša
include <configuration.scad>
include <common.scad>
height = 17;
length = 20 + x_rod_spacing; // (+ belt clamp)
zip_tie_hole = [4,7, height];
zip_tie_spacing = 5;
belt_width = 5+2;
clamp_length = belt_width+zip_tie_hole[1];
width = zip_tie_spacing*3+zip_tie_hole[1]*2;
ptfe_slider_outer_diameter = 7/16 * 25.4+1;
difference()
{
union()
{
cube([length,width,height], center = true);
belt_clamps();
}
extruder_mount();
ptfe_sliders();
}
%x_axis_rods();
module extruder_mount()
{
union()
{
translate([0,0,height/2-4/2]) cylinder(r=(16+1)/2, h=4+1, center = true);
cylinder(r=(14+0.5)/2, h=height, center = true);
}
}
module belt_clamps()
{
//belt clamps using zip ties to tie down the belt
translate([length/2+ clamp_length/2,0]) difference()
{
cube([clamp_length,width,height], center=true);
for (i=[-1,1]) translate([-clamp_length/2,i*(zip_tie_hole[1]+zip_tie_spacing)/2])
cube(zip_tie_hole, center = true);
}
}
//This should fit mcmaster part #2706T15
module ptfe_sliders()
{
for (i=[-1,1]) translate([i*x_rod_spacing/2,0,0])
{
rotate([90]) cylinder(r=ptfe_slider_outer_diameter/2, h=width+1, center=true);
}
}
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