X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=tube-crossdrill-jig.scad;h=ddcea4c9bacd2f9ed61adfd70cefaa44698ac47e;hp=971c5689bfbfc893337f490fdcd2dc070517716f;hb=1c594ed484b1ce13c6ec33f3eb48e9f291767037;hpb=818e7d2627ed6748d61bf93a52ab5936bb3dc053

diff --git a/tube-crossdrill-jig.scad b/tube-crossdrill-jig.scad
index 971c568..ddcea4c 100644
--- a/tube-crossdrill-jig.scad
+++ b/tube-crossdrill-jig.scad
@@ -1,14 +1,20 @@
 // -*- 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;
 
 boltholedia = 6.5 + 0.5;
+boltholeslotshorter = 6;
 mainframeholedia = 5 + 0.5;
 
 // "slot" refers to the things in the base of the drill press stand
@@ -27,6 +33,9 @@ keepslotwidth = 4;
 mainframeextraside = 15;
 mainframeextrafront = 25;
 
+rearwallstrengthwidth = 10;
+keepslotclear = 10;
+
 // computed values
 
 mainframeholex = backslotedgespace/2 + slotwidth/sqrt(2) +
@@ -45,12 +54,15 @@ module MainFrame(){
 	cube([mainframemaxx+1, -mainframeminy, basethick]);
       translate([-1, -rearwallthick, 0])
 	cube([mainframemaxx+1, rearwallthick, mainframemaxz]);
-      translate([mainframemaxx,0,0])
-	rotate([90,0,-90])
-	linear_extrude(height=mainframeendthick)
-	polygon([[-mainframeminy, 0],
-		 [0, mainframemaxz],
-		 [0, 0]]);
+
+      for (x=[keepslotx - keepslotclear, mainframemaxx - 0.5]) {
+	translate([x,0,0])
+	  rotate([90,0,-90])
+	  linear_extrude(height=mainframeendthick)
+	  polygon([[-mainframeminy, 0],
+		   [0, mainframemaxz],
+		   [0, 0]]);
+      }
 
       translate([backslotedgespace/2, 0, 1])
 	mirror([0,0,1])
@@ -60,6 +72,12 @@ module MainFrame(){
 		 [slotplugdepth / sqrt(2) + slotwidth * sqrt(2),
 		  -slotplugdepth],
 		 [slotplugdepth / sqrt(2), -slotplugdepth]]);
+      translate([-1,
+		 -rearwallthick - boltholeslotshorter + 0.2,
+		 tubedia + tubetubetopslop + tubetubethick + 4])
+	cube([keepslotx - keepslotclear + 1,
+	      boltholeslotshorter + 0.5,
+	      rearwallstrengthwidth]);
     }
   }
 }
@@ -86,7 +104,7 @@ module Jig(){
 	TubeThing(10, tubedia, 0, 5);
       translate([-boltholedia/2, mainframeminy - 1, -5])
 	cube([boltholedia,
-	      -mainframeminy + 1 - rearwallthick - 0.1,
+	      -mainframeminy + 1 - rearwallthick - boltholeslotshorter,
 	      mainframemaxz + 10]);
       for (m=[0,1]) {
 	mirror([m,0,0]) {
@@ -104,4 +122,5 @@ module Jig(){
 //MainFrame();
 //TubeThing(0, tubedia);
 
-Jig();
+rotate([-90,0,0])
+  Jig();