more 3d-printable parts

3dprint/beam.scad

@@ -35,7 +35,7 @@ hull() for (tr=[[0,0],[-hd/2-offset,0],[-hd/2-offset,vd],[-hd/2,vd]]) translate(
     translate([(i-0.5)*hd,vd-offset]) circle(d=hole);
   }
   }
-#translate([-hd/2-offset-wall/2,height/4-wall,thickness/2])rotate([0,90,0])cylinder(d=hole,h=hd-wall);
-#translate([-hd/2-offset-wall/2,height/2-wall/2,thickness/2])rotate([0,90,0])cylinder(d=hole,h=hd-wall);
-#translate([-hd/2-offset-wall/2,height*3/4,thickness/2])rotate([0,90,0])cylinder(d=hole,h=hd-wall);
+translate([-hd/2-offset-wall/2,height/4-wall,thickness/2])rotate([0,90,0])cylinder(d=hole,h=hd-wall);
+translate([-hd/2-offset-wall/2,height/2-wall/2,thickness/2])rotate([0,90,0])cylinder(d=hole,h=hd-wall);
+translate([-hd/2-offset-wall/2,height*3/4,thickness/2])rotate([0,90,0])cylinder(d=hole,h=hd-wall);
 }

3dprint/enclosure.scad

@@ -0,0 +1 @@
+part="bottom";//[bottom,top]

actuator.json

@@ -0,0 +1,26 @@
+{
+    "fileFormatVersion": "1",
+    "parameterSets": {
+        "New set 1": {
+            "air": "0.5",
+            "copper_height": "5",
+            "hole": "2",
+            "iron_d": "4",
+            "part": "cap",
+            "slit": "15",
+            "total_length": "50",
+            "wall": "0.80000000000000004"
+        },
+        "New set 2": {
+            "air": "0.5",
+            "copper_height": "5",
+            "hammer_flat": "false",
+            "hole": "2",
+            "iron_d": "4",
+            "part": "spool",
+            "slit": "15",
+            "total_length": "50",
+            "wall": "0.80000000000000004"
+        }
+    }
+}

actuator.scad

@@ -0,0 +1,71 @@
+$fa=1/1;
+$fs=1/2;
+bissl=1/2;
+part="spool";//[spool,cap,hammer,all]
+total_length=50;
+wall=0.8;
+air=0.5;
+copper_height=5;
+thick_wall=2*wall; //can be specified
+iron_d=4;
+iron_h=total_length/3; //can be changed, but this seems optimal
+spool_h=iron_h; //according to theory, optimum is a little more
+iron_travel=iron_h; //may be smaller with heavy beaters or returning springs
+extra_hold=iron_h/3;
+spool_id=iron_d+2*air;
+spool_od=spool_id+2*wall;
+cap_od=spool_od+2*copper_height;
+slit=15;
+hole=3;
+hammer_flat=true;
+module spool() {
+  difference() {
+    union() {
+      cylinder(d1=spool_od,d2=cap_od,h=thick_wall+iron_travel);
+      translate([0,0,iron_travel+thick_wall]) cylinder(d=spool_od,h=spool_h+extra_hold);
+    }
+    translate([0,0,thick_wall]) cylinder(d=spool_id,h=spool_h+iron_h+bissl+extra_hold);
+  }
+}
+module cap() {
+difference() {
+union() {
+cylinder(d=cap_od,h=thick_wall);
+translate([0,0,thick_wall])cylinder(d=spool_od+2*wall+2*air,h=extra_hold);
+translate([-cap_od/2,0,0])cube([cap_od,cap_od/2,thick_wall]);
+translate([-cap_od/2,cap_od/2,0])cube([cap_od,thick_wall,2*thick_wall+slit]);
+translate([-thick_wall/2,0,0])cube([thick_wall,cap_od/2,extra_hold+thick_wall]);
+}
+translate([0,0,-bissl])cylinder(d=spool_id,h=extra_hold+thick_wall+2*bissl);
+cylinder(d=spool_od+2*air,h=extra_hold);
+hull() {
+translate([cap_od/2-thick_wall-hole/2,cap_od/2+thick_wall/2,2*thick_wall+hole/2])rotate([90,0,0])cylinder (d=hole, h=thick_wall+bissl,center=true);
+translate([cap_od/2-thick_wall-hole/2,cap_od/2+thick_wall/2,slit])rotate([90,0,0])cylinder (d=hole, h=thick_wall+bissl,center=true);
+}
+hull() {
+translate([-cap_od/2+thick_wall+hole/2,cap_od/2+thick_wall/2,2*thick_wall+hole/2])rotate([90,0,0])cylinder (d=hole, h=thick_wall+bissl,center=true);
+translate([-cap_od/2+thick_wall+hole/2,cap_od/2+thick_wall/2,slit])rotate([90,0,0])cylinder (d=hole, h=thick_wall+bissl,center=true);
+}
+}
+}
+echo (cap_od-thick_wall*2-hole);
+module hammer() {
+if (hammer_flat) {
+cylinder(d=cap_od-2*air,h=thick_wall);
+translate([0,0,thick_wall]) cylinder(d1=cap_od-2*air,d2=iron_d,h=cap_od/2-iron_d/2-air/2);
+}
+else {
+cylinder(d2=cap_od/2,d1=iron_d,h=cap_od/4-iron_d/4);
+translate([0,0,cap_od/4-iron_d/4])cylinder(d=cap_od/2,h=thick_wall);
+translate([0,0,cap_od/4-iron_d/4+thick_wall]) cylinder(d1=cap_od/2,d2=iron_d,h=cap_od/4-iron_d/4);
+}
+translate([0,0,thick_wall+cap_od/2-iron_d/2-air/2]) cylinder(d=iron_d,h=1.5*iron_h);
+}
+if (part=="all") {
+spool();
+translate([0,0,spool_h+iron_h+bissl+air+thick_wall])cap();
+translate([0,0,total_length])mirror([0,0,1])hammer();
+}
+if (part=="spool") spool();
+if (part=="cap") cap();
+if (part=="hammer") hammer();