X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=tube-crossdrill-jig.scad;h=0b18eccd9269bb45729ce65a9c827dcbfce83b7b;hb=7ac53be54265ee7ff2eaaf5e0bbaf7d585e94384;hp=ddcea4c9bacd2f9ed61adfd70cefaa44698ac47e;hpb=1c594ed484b1ce13c6ec33f3eb48e9f291767037;p=reprap-play.git

diff --git a/tube-crossdrill-jig.scad b/tube-crossdrill-jig.scad
index ddcea4c..0b18ecc 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;
@@ -18,11 +18,14 @@ boltholeslotshorter = 6;
 mainframeholedia = 5 + 0.5;
 
 // "slot" refers to the things in the base of the drill press stand
-backslotedgespace = 71;
+backslotedgespace = 55;
 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;
@@ -31,7 +34,7 @@ keepslotx = backslotedgespace / 2;
 keepslotwidth = 4;
 
 mainframeextraside = 15;
-mainframeextrafront = 25;
+mainframeextrafront = 15;
 
 rearwallstrengthwidth = 10;
 keepslotclear = 10;
@@ -47,6 +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]) {
@@ -68,10 +79,11 @@ 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])