hingescrew_shaft_dia = 2.0 + 0.25; // M2 x 12mm machine screw
hingescrew_shaft_len = 12;
hingescrew_nut_thick = 1.93 + 0.20; // incl. washer
-hingescrew_nut_dia = 4.72 + 0.50; // washer, actually
+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
hingescrew_nut_across = 3.92 + 0.25; // incl. slop around recess slop
hingescrew_nut_thick_real = 1.93;
hingescrew_head_th = 1.38 + 0.75;
bppW = lpp10;
// hinge plan
-hp_rn = hingescrew_nut_dia/2;
+hp_rn = hingescrew_nut_access_dia/2;
hp_r2_min = hp_rn + lever_cover_th;
hp_rs = hingescrew_shaft_dia/2;
hp_r1_min = hp_rs + hingemount_th;