draft of the more materials mixer

1 files changed, 43 insertions, 0 deletions

diff --git a/pushfittery.scad b/pushfittery.scad
new file mode 100644
index 0000000..adebec2
--- a/dev/null
+++ b/pushfittery.scad
@@ -0,0 +1,43 @@
+draft = true;
+
+use <threads.scad>;
+
+function pf_(d,k) = d[search([k],d)[0]][1];
+function pf_d(pf) = pf_(pf,"d");
+function pf_h(pf) = pf_(pf,"h");
+module pushfit(pf,draft=draft) {
+ fnd = 2*PI; epsilon=.01;
+ type = pf_(pf,"type");
+ h = pf_h(pf);
+ if(type=="threaded") {
+  minch = 25.4;
+  d = (pf_d(pf) + pf_(pf,"d_tolerance"))/minch;
+  tpi = pf_(pf,"tpi");
+  if(draft) cylinder(d=d*minch,h=h+epsilon);
+  else english_thread(diameter=d,threads_per_inch=tpi,length=h/minch+epsilon,internal=true);
+  slitl = d*minch+layer_height;
+  slitw = 0.8*d*minch/2;
+  echo(slitw,slitl);
+  translate([-slitw/2,-slitl/2,0]) cube([slitw,slitl,h+epsilon]);
+ }else if(type=="embedded") {
+  d = pf_d(pf);
+  h_ring = pf_(pf,"h_ring");
+  d_insert = pf_(pf,"d_insert");
+  $fn = d*fnd;
+  translate([0,0,h-h_ring]) cylinder(d=d,h=h_ring+epsilon);
+  cylinder(d=d_insert,h=h);
+ }else if(type=="embeddest") {
+  d = pf_d(pf);
+  id = pf_(pf,"id");
+  h_legspace = pf_(pf,"h_legspace");
+  ch = pf_(pf,"ch");
+  $fn = d*fnd;
+  cylinder(d=id,h=h+1);
+  cylinder(d=d,h=h_legspace);
+  dd = (d-id)/2;
+  translate([0,0,h_legspace-epsilon])
+  cylinder(d1=d,d2=id-2*epsilon,h=dd+epsilon);
+  translate([0,0,h-ch-epsilon])
+  cylinder(d1=id-2*epsilon,d2=id+2*ch+2,h=ch+epsilon+1);
+ }
+}//pushfit module