From 306d07e7f036c39c517106ed3773a79cd215db49 Mon Sep 17 00:00:00 2001
From: jdegenstein <jdegenstein@users.noreply.github.com>
Date: Thu, 11 Jul 2024 12:01:41 -0500
Subject: [PATCH 1/2] build_common.py -> correct value of MC from 1e-4 to 1e-3

---
 src/build123d/build_common.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/build123d/build_common.py b/src/build123d/build_common.py
index 3fccefb3..2f2ade59 100644
--- a/src/build123d/build_common.py
+++ b/src/build123d/build_common.py
@@ -92,7 +92,7 @@
 #
 
 # LENGTH CONSTANTS
-MC = 0.0001
+MC = 0.001
 MM = 1
 CM = 10 * MM
 M = 1000 * MM

From 209b772e1ef1f17042f707de16dc134a7db08c86 Mon Sep 17 00:00:00 2001
From: jdegenstein <jdegenstein@users.noreply.github.com>
Date: Thu, 11 Jul 2024 12:04:48 -0500
Subject: [PATCH 2/2] exporters.py -> import UNITS_PER_METER from build_common
 instead

and eliminate locally defined UNITS_PER_METER
---
 src/build123d/exporters.py | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/src/build123d/exporters.py b/src/build123d/exporters.py
index 5498f9bd..4e66b1f2 100644
--- a/src/build123d/exporters.py
+++ b/src/build123d/exporters.py
@@ -65,6 +65,7 @@
     Vector,
     VectorLike,
 )
+from build123d.build_common import UNITS_PER_METER
 
 PathSegment = Union[PT.Line, PT.Arc, PT.QuadraticBezier, PT.CubicBezier]
 
@@ -249,17 +250,6 @@ def iso_pattern(*args):
     return result
 
 
-# Scale factor to convert various units to meters.
-UNITS_PER_METER = {
-    Unit.IN: 100 / 2.54,
-    Unit.FT: 100 / (12 * 2.54),
-    Unit.MC: 1_000_000,
-    Unit.MM: 1000,
-    Unit.CM: 100,
-    Unit.M: 1,
-}
-
-
 def unit_conversion_scale(from_unit: Unit, to_unit: Unit) -> float:
     """Return the multiplicative conversion factor to go from from_unit to to_unit."""
     result = UNITS_PER_METER[to_unit] / UNITS_PER_METER[from_unit]