trestlebaseh = 10;
trestleplugd = 1;
-topcylthick = 3;
-topcylbasedepth = 4;
+topblockthick = 3;
+topblockbasedepth = 4;
+
+pinbasew = 3;
+pinminh = 1.0;
+pinmaxh = 3;
+pindh = 1.0;
+pindwidth = 1.0;
module Plug(d=0){
- a = -atan(plugslope);
- tdx = d * cos(a);
- tdy = d * sin(a);
- bdx = d / cos(a);
+ dw = d;
+ dh = d;
+ a = atan(plugslope);
+ bdx = dw / cos(a);
+ tdy = dh;
+ tdx = bdx + dh * plugslope;
translate([-d,0,0]) rotate([90,0,90]) linear_extrude(height=plugl+0.1+d*2){
polygon([[-(plugwmin/2 + bdx), 0],
[-(plugwmax/2 + tdx), plugh + tdy],
module Trestle(){
legang = atan2(trestlebase/2, trestleheight);
eplen = sqrt(trestleheight*trestleheight + trestlebase*trestlebase*0.25);
- topcylw = plugwmax + topcylthick*2;
+ topblockw = plugwmax + topblockthick*2;
+
+ pinholebasew = pinbasew + pindwidth;
+ pinholeh = pinminh + pindh;
difference(){
union(){
cylinder(r=trestlelegw/2*1.2, h=plugl);
}
}
- translate([-topcylw/2, -topcylbasedepth, 0])
- cube([topcylw, topcylbasedepth + plugh + topcylthick, plugl]);
+ translate([-topblockw/2, -topblockbasedepth, 0])
+ cube([topblockw, topblockbasedepth + plugh + topblockthick, plugl]);
translate([-trestlebase/2, -trestleheight, 0])
ExtenderPillars(length=trestlebase, width=trestlebaseh*2, height=plugl);
rotate([-90,-90,0])
Plug(d=trestleplugd);
+
+ for (rot=[0,180]) {
+ translate([0,0,plugl/2]) rotate([0,rot,0]) translate([0,0,-plugl/2]) {
+ translate([-(topblockw*0.25+1),
+ plugh + pindh - (pinmaxh - pinminh)/2,
+ (plugl - pinholebasew*2)/3]) rotate([0,90,0]) {
+ linear_extrude(height = topblockw*1.0+2) {
+ polygon([[-1.0 * pinholebasew, -0.01],
+ [-0.5 * pinholebasew, pinholeh],
+ [ 0 , -0.01]]);
+ }
+ }
+ }
+ }
}
}