author | Michael Krelin <hacker@klever.net> | 2018-08-31 22:38:35 (UTC) |
---|---|---|
committer | Michael Krelin <hacker@klever.net> | 2018-08-31 22:38:35 (UTC) |
commit | aae457de5558e166564bf50ed50c53acfa6b62cd (patch) (unidiff) | |
tree | cd61a573f4755cf9cb35d9e81604370c829034bf | |
parent | 558d255a01ee6ced090290c5b7f2f9b75cec1360 (diff) | |
download | extrudery-aae457de5558e166564bf50ed50c53acfa6b62cd.zip extrudery-aae457de5558e166564bf50ed50c53acfa6b62cd.tar.gz extrudery-aae457de5558e166564bf50ed50c53acfa6b62cd.tar.bz2 |
automatically calculate knob bore length
-rw-r--r-- | another.scad | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/another.scad b/another.scad index e4d79f9..915b184 100644 --- a/another.scad +++ b/another.scad | |||
@@ -26,15 +26,15 @@ module the_extruder( | |||
26 | // filament path properties | 26 | // filament path properties |
27 | filament_d = 1.75, | 27 | filament_d = 1.75, |
28 | filament_path_d = 2, | 28 | filament_path_d = 2, |
29 | filament_guide_d = 4, // PTFE filament guide diameter | 29 | filament_guide_d = 4, // PTFE filament guide diameter |
30 | // knob properties | 30 | // knob properties |
31 | knob_h = 10, | 31 | knob_h = 10, |
32 | knob_bore_l = 4, | ||
33 | knob_indent_d = 4, | 32 | knob_indent_d = 4, |
34 | knob_indents = 12, | 33 | knob_indents = 12, |
34 | knob_v_clearance = 1, | ||
35 | // spring tensioner | 35 | // spring tensioner |
36 | st_nut_d = 9, st_nut_h = 4, | 36 | st_nut_d = 9, st_nut_h = 4, |
37 | st_screw_d = 5, | 37 | st_screw_d = 5, |
38 | st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width, | 38 | st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width, |
39 | st_split_w = 4*extrusion_width, | 39 | st_split_w = 4*extrusion_width, |
40 | 40 | ||
@@ -405,12 +405,13 @@ module the_extruder( | |||
405 | cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); | 405 | cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance)); |
406 | } | 406 | } |
407 | } | 407 | } |
408 | 408 | ||
409 | module knob() { | 409 | module knob() { |
410 | ch = knob_indent_d/2; | 410 | ch = knob_indent_d/2; |
411 | knob_bore_l = body_h-protrusion_h-pulley_elevation-pulley_h-knob_v_clearance; | ||
411 | translate([0,0,body_h+epsilon]) { | 412 | translate([0,0,body_h+epsilon]) { |
412 | mirror([0,0,1]) translate([0,0,-epsilon]) { | 413 | mirror([0,0,1]) translate([0,0,-epsilon]) { |
413 | difference() { | 414 | difference() { |
414 | cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d); | 415 | cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d); |
415 | translate([0,0,-1]) difference() { | 416 | translate([0,0,-1]) difference() { |
416 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); | 417 | cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2); |