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screw bugfixes

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This commit is contained in:
Adrian Mariano 2022-09-08 23:23:39 -04:00
parent 62733fb0d7
commit 7f71a708e7
1 changed files with 6 additions and 6 deletions
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12
screws.scad
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@ -421,12 +421,12 @@ module screw(spec, head="none", drive, thread="coarse", drive_size,
dummyQ = assert(is_undef(flat_height) || flat_height < length, str("Length of screw (",length,") is shorter than the flat head height (",flat_height,")"));
attach_size = atype=="head" && head=="hex" ? [head_diam, head_diam*2/sqrt(3), head_height] : undef;
offset = atype=="head" ? (-head_height+flat_height)/2
: atype=="shaft" ? (length+flat_height)/2
: atype=="shaft" ? length/2 //(length+flat_height)/2 Not sure what shaft is for flatheads
: atype=="shank" ? shank/2
: atype=="threads" ? shank+(length-shank)/2+flat_height
: atype=="screw" ? length/2-head_height/2
: assert(false,"Unknown atype");
echo(atype=atype, offset=offset, hh=head_height);
echo(atype=atype, offset=offset, hh=head_height,length=length);
anchor_list = [
named_anchor("top", [0,0,offset]),
named_anchor("bot", [0,0,-length+offset]),
@ -456,6 +456,7 @@ module screw(spec, head="none", drive, thread="coarse", drive_size,
: atype=="screw" ? length+head_height
: head=="hex" ? undef
: head_height+flat_height;
echo(attach_l=attach_l);
attachable(
size = attach_size,
d = attach_d,
@ -673,7 +674,6 @@ module _driver(spec)
{
drive = struct_val(spec,"drive");
if (is_def(drive) && drive!="none") {
echo(inside_drive=drive);
head = struct_val(spec,"head");
diameter = struct_val(spec,"diameter");
drive_size = struct_val(spec,"drive_size");
@ -1440,7 +1440,7 @@ function _screw_info_english(diam, threadcount, head, thread, drive) =
["#3", [ 0.193, 1/16, 8 , 0.044, 0.041]],
["#4", [ 0.218, 1/16, 10 , 0.055, 0.038]],
["#5", [ 0.240, 5/64, 10 , 0.061, 0.038]],
["#6", [ 0.363, 5/64, 15 , 0.066, 0.045]],
["#6", [ 0.263, 5/64, 15 , 0.066, 0.045]],
["#8", [ 0.311, 3/32, 20 , 0.076, 0.053]],
["#10",[ 0.359, 1/8, 25 , 0.087, 0.061]],
[1/4, [ 0.480, 5/32, 30 , 0.111, 0.075]],
@ -1470,8 +1470,8 @@ function _screw_info_english(diam, threadcount, head, thread, drive) =
dsmall=[.003, .063, .125],
dlarge = [-.031, .031, .062],
sharpsize = small ? csmall[diamgroup]*diameter-dsmall[diamgroup] // max theoretical (sharp) head diam
: diameter < 0.2 ? [0.138,0.168,0.0822,0.0949][(diameter - 0.06)/.013]
: 2*diameter-dlarge[diamgroup],
: diameter < 0.1 ? [0.138,0.168,0.0822,0.0949][(diameter - 0.06)/.013]
: 2*diameter-dlarge[diamgroup],
largesize = lerp(entry[0],sharpsize,.20), // Have min size and max theory size. Use point 20% up from min size
undercut_height = let(
a=[.432+.386, .417+.37, .417+.37]/2,