diff --git a/masque/builder/pather.py b/masque/builder/pather.py
index 48a3484..e9cd125 100644
--- a/masque/builder/pather.py
+++ b/masque/builder/pather.py
@@ -7,13 +7,9 @@ import copy
 import logging
 from pprint import pformat
 
-import numpy
-from numpy import pi
-from numpy.typing import ArrayLike
-
 from ..pattern import Pattern
 from ..library import ILibrary
-from ..error import PortError, BuildError
+from ..error import BuildError
 from ..ports import PortList, Port
 from ..utils import SupportsBool
 from .tools import Tool
diff --git a/masque/builder/pather_mixin.py b/masque/builder/pather_mixin.py
index e4dc990..180f451 100644
--- a/masque/builder/pather_mixin.py
+++ b/masque/builder/pather_mixin.py
@@ -1,19 +1,18 @@
-from typing import SupportsFloat, cast, TYPE_CHECKING, Iterator, Self
-from collections.abc import Sequence, Mapping, MutableMapping
+from typing import Self
+from collections.abc import Sequence, Iterator
 import logging
 from contextlib import contextmanager
 from abc import abstractmethod, ABCMeta
 
 import numpy
 from numpy import pi
-from numpy.typing import ArrayLike, NDArray
+from numpy.typing import ArrayLike
 
 from ..pattern import Pattern
 from ..library import ILibrary
 from ..error import PortError, BuildError
-from ..ports import PortList, Port
 from ..utils import rotation_matrix_2d, SupportsBool
-from ..abstract import Abstract
+#from ..abstract import Abstract
 from .tools import Tool
 from .utils import ell
 
diff --git a/masque/builder/renderpather.py b/masque/builder/renderpather.py
index bb35b1a..33bcb76 100644
--- a/masque/builder/renderpather.py
+++ b/masque/builder/renderpather.py
@@ -8,13 +8,12 @@ import logging
 from collections import defaultdict
 from pprint import pformat
 
-import numpy
 from numpy import pi
 from numpy.typing import ArrayLike
 
 from ..pattern import Pattern
 from ..library import ILibrary
-from ..error import PortError, BuildError
+from ..error import BuildError
 from ..ports import PortList, Port
 from ..abstract import Abstract
 from ..utils import SupportsBool