X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=tube-crossdrill-jig.scad;h=5619e93eb649a86b1a4d34be12698bc6ec5a826e;hb=78701ddb56c37f9f319a1cd6af93d08e06c67c2c;hp=55d8183650b4effe740fd0772ec745cd19dd7fa6;hpb=dab6b40ef63d4f7143bc74db5e49951c51148d99;p=reprap-play.git

diff --git a/tube-crossdrill-jig.scad b/tube-crossdrill-jig.scad
index 55d8183..5619e93 100644
--- a/tube-crossdrill-jig.scad
+++ b/tube-crossdrill-jig.scad
@@ -1,10 +1,15 @@
 // -*- C -*-
 
+//$fs=0.1;
+//$fa=3;
+$fs=0.2;
+$fa=6;
+
 rearwallthick = 3;
 basethick = 3;
 mainframeendthick = 2.5;
 
-tubedia=16;
+tubedia = 16 + 0.8;
 tubetubethick=2;
 tubetubetopslop=1;
 
@@ -17,7 +22,10 @@ backslotedgespace = 71;
 slotwidth = 11.5;
 backslotmid2screwhole = 17;
 slotplugheight = 5.5;
-slotplugdepth = 10;
+slotplugshorterlen = 8;
+slotpluglongerlen = 18;
+
+slotslope = 11.0 / 18.5;
 
 // "keepslot" refers to the screws in the wooden jig block
 keepslotstartz = 20;
@@ -29,6 +37,7 @@ mainframeextraside = 15;
 mainframeextrafront = 25;
 
 rearwallstrengthwidth = 10;
+keepslotclear = 10;
 
 // computed values
 
@@ -41,6 +50,14 @@ mainframemaxx = mainframeholex + mainframeextraside;
 mainframeminy = mainframeholey - mainframeextrafront;
 mainframemaxz = keepslotstartz + keepslotlen;
 
+slotslopediag = sqrt(1 + slotslope*slotslope);
+slotwidthx = slotwidth * slotslopediag;
+
+slotxperlen = slotslope / slotslopediag;
+slotyperlen =         1 / slotslopediag;
+
+echo(slotslope, slotslopediag, slotwidthx);
+
 module MainFrame(){
   for (m=[0,1]) {
     mirror([m,0,0]) {
@@ -49,7 +66,7 @@ module MainFrame(){
       translate([-1, -rearwallthick, 0])
 	cube([mainframemaxx+1, rearwallthick, mainframemaxz]);
 
-      for (x=[keepslotx - 10, mainframemaxx]) {
+      for (x=[keepslotx - keepslotclear, mainframemaxx - 0.5]) {
 	translate([x,0,0])
 	  rotate([90,0,-90])
 	  linear_extrude(height=mainframeendthick)
@@ -62,14 +79,15 @@ module MainFrame(){
 	mirror([0,0,1])
 	linear_extrude(height=slotplugheight+1)
 	polygon([[0,0],
-		 [slotwidth * sqrt(2), 0],
-		 [slotplugdepth / sqrt(2) + slotwidth * sqrt(2),
-		  -slotplugdepth],
-		 [slotplugdepth / sqrt(2), -slotplugdepth]]);
+		 [slotwidthx, 0],
+		 [slotwidthx + slotplugshorterlen * slotxperlen,
+		  -slotplugshorterlen * slotyperlen],
+		 [slotpluglongerlen * slotxperlen,
+		  -slotpluglongerlen * slotyperlen]]);
       translate([-1,
 		 -rearwallthick - boltholeslotshorter + 0.2,
 		 tubedia + tubetubetopslop + tubetubethick + 4])
-	cube([keepslotx - 10 + 1,
+	cube([keepslotx - keepslotclear + 1,
 	      boltholeslotshorter + 0.5,
 	      rearwallstrengthwidth]);
     }
@@ -116,4 +134,5 @@ module Jig(){
 //MainFrame();
 //TubeThing(0, tubedia);
 
-Jig();
+rotate([-90,0,0])
+  Jig();