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=843a2a697123c8e10d87a0f882991cb80da2d8c2;hp=5619e93eb649a86b1a4d34be12698bc6ec5a826e;hb=a3f6f949f8143e7bfe03748cffae9f404ad58eee;hpb=78701ddb56c37f9f319a1cd6af93d08e06c67c2c

diff --git a/tube-crossdrill-jig.scad b/tube-crossdrill-jig.scad
index 5619e93..843a2a6 100644
--- a/tube-crossdrill-jig.scad
+++ b/tube-crossdrill-jig.scad
@@ -6,7 +6,7 @@ $fs=0.2;
 $fa=6;
 
 rearwallthick = 3;
-basethick = 3;
+basethick = 2;
 mainframeendthick = 2.5;
 
 tubedia = 16 + 0.8;
@@ -15,48 +15,48 @@ tubetubetopslop=1;
 
 boltholedia = 6.5 + 0.5;
 boltholeslotshorter = 6;
-mainframeholedia = 5 + 0.5;
+mainframeholedia = 5 + 1.0;
 
 // "slot" refers to the things in the base of the drill press stand
-backslotedgespace = 71;
-slotwidth = 11.5;
+backslotedgespace = 59;
+slotwidth = 11.5 - 0.5;
 backslotmid2screwhole = 17;
 slotplugheight = 5.5;
-slotplugshorterlen = 8;
-slotpluglongerlen = 18;
+slotplugshorterlen =10;
+slotpluglongerlen = 20;
 
-slotslope = 11.0 / 18.5;
+//slotslope = 11.0 / 18.5;
+slotslope = 1 / tan(51);
 
 // "keepslot" refers to the screws in the wooden jig block
 keepslotstartz = 20;
-keepslotlen = 25;
+keepslotlen = 18;
 keepslotx = backslotedgespace / 2;
 keepslotwidth = 4;
 
-mainframeextraside = 15;
-mainframeextrafront = 25;
+mainframeextraside = 12;
+mainframeextrafront = 15;
 
 rearwallstrengthwidth = 10;
 keepslotclear = 10;
 
 // computed values
 
-mainframeholex = backslotedgespace/2 + slotwidth/sqrt(2) +
-  backslotmid2screwhole / sqrt(2);
-
-mainframeholey = -backslotmid2screwhole / sqrt(2);
-
-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);
+mainframeholex = backslotedgespace/2 + slotpluglongerlen * slotxperlen
+  + 0.5 * slotwidth * slotyperlen;
+
+mainframeholey = -slotpluglongerlen * slotyperlen
+  + 0.5 * slotwidth * slotxperlen;
+
+mainframemaxx = mainframeholex + mainframeextraside;
+mainframeminy = mainframeholey - mainframeextrafront;
+mainframemaxz = keepslotstartz + keepslotlen;
 
 module MainFrame(){
   for (m=[0,1]) {