From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 28 Aug 2023 11:15:36 +0000 (+0100)
Subject: poster-tube-lid: WallMountForBase wip
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=bc39e09239a2df6c723ecbdc9c1f85bc8c67b3a0;p=reprap-play.git

poster-tube-lid: WallMountForBase wip

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 39fdecc..70e00de 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -98,6 +98,8 @@ wmb_screw_around_x = 4; // XXX
 wmb_screw_around_y = 6; // XXX
 wmb_screw_depth = 10; // XXX
 wmb_nut_across = 8; // XXX
+wmb_nut_around_min = 2; // XXX
+wmb_nut_th = 4; // XXX
 wmb_gap = 1.0;
 
 catch_stalk_h = 4.5;
@@ -175,13 +177,16 @@ wm_z_slot1_screw = wm_z_slot0_screw + wm_screw_slot;
 wm_z_max = wm_z_slot1_screw + wm_screw_around;
 
 wmb_mount_cut_rad = sm_outer_rad + wmb_gap;
-wmb_x_screw = -sm_outer_rad + wmb_screw_around_x + wmb_screw_dia/2;
+wmb_x_screw = -sm_outer_rad + max(
+				  wmb_screw_around_x + wmb_screw_dia/2,
+				  wmb_nut_around_min + wmb_nut_across/2
+				  );
 function wmb_screw_thing_y_min(dia) = sqrt(
 		       pow(wmb_mount_cut_rad, 2) -
 		       pow(wmb_x_screw + dia/2, 2)
 		       );
 wmb_y_screw_end = wmb_screw_thing_y_min(wmb_screw_dia);
-wmb_y_nut_min = wmb_screw_thing_y_min(wmb_nut_across);
+wmb_y_nut_min = wmb_screw_thing_y_min(wmb_nut_across + wmb_nut_around_min*2);
 wmb_z_screw = 10; // XXX
 
 smc_pos = [ 0, sm_inner_rad, 0 ];
@@ -666,11 +671,20 @@ module WallMountBaseMounts(){
 module WallMountBaseScrewsEtc(){
   for (my=[0,1]) {
     mirror([0, my, 0]) {
-      translate([wmb_x_screw, 0, wmb_z_screw])
+      translate([wmb_x_screw, 0, wmb_z_screw]) {
 	linextr_y_xz(wmb_y_screw_end,
 		     wmb_y_screw_end + wmb_screw_depth)
-	circle(r = wmb_screw_dia/2);
-//      translate([
+	  circle(r = wmb_screw_dia/2);
+	linextr_y_xz(wmb_y_nut_min,
+		     wmb_y_nut_min + wmb_nut_th){
+	  hull(){
+	    rotate(30)
+	      circle(r = wmb_nut_across / cos(30) * 0.5, $fn = 6);
+	    translate([0, 100]) // XXX change 100
+	      square(wmb_nut_across, center=true);
+	  }
+	}
+      }
     }
   }
 }