From 54b920d93965882f4a09d99154ac34ebbde72df9 Mon Sep 17 00:00:00 2001
From: Adrian Mariano <avm4@cornell.edu>
Date: Tue, 4 Oct 2022 23:12:29 -0400
Subject: [PATCH] fix bug

---
 screws.scad | 1 +
 1 file changed, 1 insertion(+)

diff --git a/screws.scad b/screws.scad
index a727802..0275df2 100644
--- a/screws.scad
+++ b/screws.scad
@@ -1411,6 +1411,7 @@ module nut(spec, shape, thickness, nutwidth, thread, tolerance, hole_oversize,
                                 ["threads_oversize", hole_oversize],
                                ]);
    $screw_spec = spec;
+   shape = struct_val(spec, "shape");
    pitch =  struct_val(spec, "pitch") ;
    threadspec = pitch==0 ? undef : thread_specification(spec, internal=true, tolerance=tolerance);
    nutwidth = struct_val(spec, "width");