chiark / gitweb /
fairphone-case: rework hingescrew parameters: reorder and recomment a bit (nfc)
authorIan Jackson <ijackson@chiark.greenend.org.uk>
Tue, 30 Jan 2018 13:27:33 +0000 (13:27 +0000)
committerIan Jackson <ijackson@chiark.greenend.org.uk>
Tue, 30 Jan 2018 13:27:33 +0000 (13:27 +0000)
Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
fairphone-case.scad

index f248e53..0e1e58e 100644 (file)
@@ -76,9 +76,12 @@ catch_slop = 0.50;
 foldover_gap = 0.50;
 foldover_lever_gap = 0.50;
 
+// properties of the hinge fasteners
 hingescrew_shaft_dia = 2.0 + 0.25; // M2 x 12mm machine screw
 hingescrew_shaft_len = 12;
 hingescrew_fasteners_extra_thick = 0.40;
+// ^ amount of thread protruding if everything was completely nominal
+//   and we are using two nuts
 hingescrew_nut_access_dia = 4.72 + 0.50;
 // ^ washer is 4.72 dia
 //   also, want to get pliers or tiny spanner in to do up locknut
@@ -86,12 +89,13 @@ hingescrew_nut_across = 3.92 + 0.25; // incl. slop around recess slop
 hingescrew_nut_thick = 1.93;
 hingescrew_head_th = 1.38 + 0.75;
 hingescrew_head_dia = 3.92;
+
+hingescrew_nut_recess_portion = 2/3; // portion of nut in recess
+
 lever_cover_th = 0.75;
 hingemount_th = 2.5;
 hingemount_wd = 4.8725;
 
-hingescrew_nut_recess_portion = 2/3; // portion of nut in recess
-
 $fa = 5;
 $fs = 0.1;