I found a few ‘Fractal Fidgets’ on printables but the gaps seemed too tight.
Fidget Sensory Fractal Star and other shapes customize to your liking by Petros | Download free STL model | Printables.com
This seemed like such a simple object that I took the plunge and attempted to build a blender python script to programmatically create them with wall thickness, height, radius, gap size as some of the parameters.
I started with stars, but added polygons and an option for the center to be filled and additionally with an option to add a 'handle' (only works if center is filled).
The uploaded stl files are created from the script below. I used ChatGPT to assist in making the script, but the 3D files themselves were not AI generated.
Enjoy!
import bpy
import bmesh
import math
from mathutils import Vector

def create_star_edges(name='star', num_points=5, outer_radius=1.0, inner_radius=0.5, location=(0, 0, 0), fill='NOTHING', collection_name='Scene Collection'):
    """
    Adds a star mesh to the scene.

    Args:
        num_points (int): The number of points on the star.
        outer_radius (float): The radius of the outer points of the star.
        inner_radius (float): The radius of the inner points of the star.
        location (tuple): The (x, y, z) location to place the star.
        fill (str): 'NOTHING' (default) or 'NGON'
    """
    
    # --- Make sure we are in Object Mode and have a clean selection ---
    if bpy.context.object is not None and bpy.context.object.mode != 'OBJECT':
        bpy.ops.object.mode_set(mode='OBJECT')

    bpy.ops.object.select_all(action='DESELECT')
    

    # Add a circle mesh
    bpy.ops.mesh.primitive_circle_add(
        vertices=num_points * 2,  # Double the vertices for inner and outer points
        radius=outer_radius,
        fill_type=fill,
        location=location
    )

    # Get the newly created object
    obj = bpy.context.active_object
    if obj is None:
        # Bail out clearly if the operator failed
        raise RuntimeError("Failed to create star: primitive_circle_add did not create an active object")

    obj.name = name
    obj.data.name = f"{name}_Mesh"

    # Switch to edit mode
    bpy.ops.object.mode_set(mode='EDIT')

    # Create a BMesh from the object's mesh data
    bm = bmesh.from_edit_mesh(obj.data)

    # Deselect all vertices initially
    for v in bm.verts:
        v.select = False

    # Select every other vertex (the inner points)
    for i, v in enumerate(bm.verts):
        if i % 2 != 0:  # Select odd-indexed vertices
            v.select = True

    # Scale the selected vertices (inner points)
    bpy.ops.transform.resize(value=(inner_radius / outer_radius,
                                    inner_radius / outer_radius,
                                    1))

    # Update the mesh and switch back to object mode
    bmesh.update_edit_mesh(obj.data)
    bpy.ops.object.mode_set(mode='OBJECT')

    # --- Ensure collection exists and link the object into it ---
    if collection_name:
        coll = bpy.data.collections.get(collection_name)
        if coll is None:
            coll = bpy.data.collections.new(collection_name)
            # Link the new collection under the scene's master collection
            bpy.context.scene.collection.children.link(coll)
    else:
        coll = bpy.context.scene.collection

    # Link object into the target collection if needed
    if obj.name not in coll.objects:
        coll.objects.link(obj)

    # Optionally remove from the scene master collection to avoid duplicates
    master = bpy.context.scene.collection
    if coll is not master and obj.name in master.objects:
        master.objects.unlink(obj)
        
    return obj


def create_polygon_edges(name="Polygon", num_points=6, radius=1.0, location=(0, 0, 0), close_loop=True, collection_name='Scene Collection'):
    
    """
    Creates an edge-only polygon with num_points points.

    Args:
        name (str): Name of the new mesh object.
        num_points (int): Number of polygon vertices.
        radius (float): Radius of the polygon in XY.
        location (tuple): (x,y,z) location of the object.
        close_loop (bool): Connect last→first.

    Returns:
        bpy.types.Object: The created object.
    """

    if num_points < 2:
        raise ValueError("num_points must be >= 2")

    # --- Make sure we are in Object Mode and have a clean selection ---
    if bpy.context.object is not None and bpy.context.object.mode != 'OBJECT':
        try:
            bpy.ops.object.mode_set(mode='OBJECT')
        except RuntimeError:
            # In some non-standard contexts mode_set can fail; not fatal here
            pass

    try:
        bpy.ops.object.select_all(action='DESELECT')
    except RuntimeError:
        # Can fail if no suitable view-layer context, safe to ignore
        pass

    # Create empty mesh and object
    mesh = bpy.data.meshes.new(f"{name}_Mesh")
    obj = bpy.data.objects.new(name, mesh)
    obj.location = location

    # Build polygon vertices
    verts = []
    for i in range(num_points):
        angle = (2 * math.pi * i) / num_points
        x = radius * math.cos(angle)
        y = radius * math.sin(angle)
        verts.append((x, y, 0.0))

    # Build the mesh
    bm = bmesh.new()

    bm_verts = [bm.verts.new(v) for v in verts]
    bm.verts.ensure_lookup_table()

    # Create edges between consecutive verts
    for i in range(num_points - 1):
        bm.edges.new((bm_verts[i], bm_verts[i+1]))

    # Close loop if requested
    if close_loop and num_points > 2:
        bm.edges.new((bm_verts[-1], bm_verts[0]))

    bm.to_mesh(mesh)
    bm.free()

    # --- Ensure collection exists and link the object into it ---
    if collection_name:
        coll = bpy.data.collections.get(collection_name)
        if coll is None:
            coll = bpy.data.collections.new(collection_name)
            # Link the new collection under the scene's master collection
            bpy.context.scene.collection.children.link(coll)
    else:
        coll = bpy.context.scene.collection

    # Link object into the target collection if needed
    if obj.name not in coll.objects:
        coll.objects.link(obj)

    # Optionally remove from the scene master collection to avoid duplicates
    master = bpy.context.scene.collection
    if coll is not master and obj.name in master.objects:
        master.objects.unlink(obj)

    return obj


def extrude_edges(edge_obj, height=4.0, cap=False):
    """
    Extrudes all edges of a mesh in the Z direction.
    After extrusion, only the newly created faces (walls and optional caps)
    are selected, and their normals are made consistent/outward.
    """

    # Make sure the object is active
    bpy.context.view_layer.objects.active = edge_obj
    edge_obj.select_set(True)

    # Switch to Edit Mode
    bpy.ops.object.mode_set(mode='EDIT')

    # Work with BMesh
    bm = bmesh.from_edit_mesh(edge_obj.data)
    bm.verts.ensure_lookup_table()
    bm.edges.ensure_lookup_table()
    bm.faces.ensure_lookup_table()

    # --- EXTRUDE EDGES USING BMESH ---

    # Extrude all edges (or you could filter to selected ones)
    res = bmesh.ops.extrude_edge_only(bm, edges=bm.edges)

    extruded_geom = res["geom"]
    extruded_verts = [ele for ele in extruded_geom
                      if isinstance(ele, bmesh.types.BMVert)]
    new_side_faces = [ele for ele in extruded_geom
                      if isinstance(ele, bmesh.types.BMFace)]

    # Move extruded verts up in Z
    for v in extruded_verts:
        v.co.z += height

    new_cap_faces = []

    # --- OPTIONAL: CAP TOP & BOTTOM ---

    if cap:
        bm.edges.ensure_lookup_table()
        boundary_edges = [e for e in bm.edges if e.is_boundary]

        if boundary_edges:
            cap_res = bmesh.ops.edgeloop_fill(bm, edges=boundary_edges)
            new_cap_faces = cap_res.get("faces", [])

    # --- NORMALS ---

    # Recalculate normals for the *whole* mesh.
    # This gives Blender the best chance of deciding what "outside" means.
    bmesh.ops.recalc_face_normals(bm, faces=bm.faces)

    # OPTIONAL: enforce "top faces point +Z".
    # This is useful if your mesh is a simple extrude along +Z.
    if cap and bm.faces:
        # Pick the face with the highest center.z as "top"
        top_face = max(bm.faces, key=lambda f: f.calc_center_median().z)
        if top_face.normal.z < 0.0:
            # Flip all faces if the top is pointing down
            bmesh.ops.reverse_faces(bm, faces=bm.faces)

    # Push changes back to mesh and leave Edit Mode
    bmesh.update_edit_mesh(edge_obj.data)
    bpy.ops.object.mode_set(mode='OBJECT')



def duplicate_object(obj, new_name=None, collection_name='Scene Collection'):
    new_obj = obj.copy()              # duplicate object
    new_obj.data = obj.data.copy()    # copy the mesh data (important!)
    if new_name:
        new_obj.name = new_name
        new_obj.data.name = f"{new_name}_Mesh"
#    bpy.context.collection.objects.link(new_obj)

    # Ensure collection exists
    if collection_name in bpy.data.collections:
        coll = bpy.data.collections[collection_name]
    else:
        coll = bpy.data.collections.new(collection_name)
        bpy.context.scene.collection.children.link(coll)

    # Link object into collection
    coll.objects.link(new_obj)
    
    return new_obj


def radial_displace_verts(obj, dr=0.1, center=(0.0, 0.0), z_range=[-0.1, 0.1]):
    """
    Move vertices radially in the XY plane by a fixed displacement dr.
    Optionally only for vertices whose Z is in z_range = [z_min, z_max].
    """

    # Make sure it's the active object
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)

    # Enter Edit Mode
    bpy.ops.object.mode_set(mode='EDIT')

    # BMesh access
    bm = bmesh.from_edit_mesh(obj.data)

    cx, cy = center

    # Optional: clear previous selection
    for v in bm.verts:
        v.select = False

    for v in bm.verts:

        if z_range:
            z = v.co.z
            if z < z_range[0] or z > z_range[1]:
                continue
        
        # Mark as selected (if you want to see them)
        v.select = True
        
        # Current position relative to center
        dx = v.co.x - cx
        dy = v.co.y - cy
        r = math.hypot(dx, dy)

        # If very close to center, skip to avoid division by zero
        if r < 1e-8:
            continue

        # New radius is old radius + fixed displacement
        new_r = r + dr
        scale = new_r / r

        # Apply radial scaling in XY around center
        v.co.x = cx + dx * scale
        v.co.y = cy + dy * scale
        # z stays unchanged

    # Push changes back to the mesh
    bmesh.update_edit_mesh(obj.data)
    bpy.ops.object.mode_set(mode='OBJECT')



def extrude_faces_along_normals(obj, distance=0.1):
    """
    Extrudes all faces of a mesh along their individual normals
    by the given distance, using bmesh (no operators that depend on context).

    Args:
        obj (bpy.types.Object): Mesh object to modify.
        distance (float): Extrusion distance along face normals.
    """
    bpy.ops.object.select_all(action='DESELECT')

    # Make sure it's active
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)

    # Go to Edit Mode
    bpy.ops.object.mode_set(mode='EDIT')

    bm = bmesh.from_edit_mesh(obj.data)
    bm.faces.ensure_lookup_table()

    for f in bm.faces:
        f.select = False
        
    # Optionally: select all faces (for visual feedback)
    for f in bm.faces:
        f.select = True

    bpy.ops.mesh.extrude_region_shrink_fatten(
        MESH_OT_extrude_region={
            "use_normal_flip":False, 
            "use_dissolve_ortho_edges":False, 
            "mirror":False
            }, 
        TRANSFORM_OT_shrink_fatten={
            "value":distance, 
            "use_even_offset":False, 
            "mirror":False, 
            "use_proportional_edit":False, 
            "proportional_edit_falloff":'SMOOTH', 
            "proportional_size":1, 
            "use_proportional_connected":False, 
            "use_proportional_projected":False, 
            "snap":False, 
            "release_confirm":False, 
            "use_accurate":True
            }
    )

    bmesh.update_edit_mesh(obj.data)
    bpy.ops.object.mode_set(mode='OBJECT')


def scale_object_xy_by_max_radius(obj, dr, z_range = None):
    """
    Scales an object in X and Y so that the maximum radial distance
    (in the XY plane) of any vertex from the object's centroid
    becomes target_max_radius.

    Args:
        obj (bpy.types.Object): Mesh object to scale.
        target_max_radius (float): Desired max radius after scaling.
    """

    if obj.type != 'MESH':
        print("Object is not a mesh.")
        return

    mesh = obj.data

    if len(mesh.vertices) == 0:
        print("Mesh has no vertices.")
        return

    # --- Compute centroid in object local space ---
    sum_x = 0.0
    sum_y = 0.0
    sum_z = 0.0

    for v in mesh.vertices:
        co = v.co
        sum_x += co.x
        sum_y += co.y
        sum_z += co.z

    n = len(mesh.vertices)
    cx = sum_x / n
    cy = sum_y / n
    cz = sum_z / n  # not used, but computed for completeness

    # --- Compute max radial distance in XY from centroid ---
    max_r = 0.0
    for v in mesh.vertices:
        dx = v.co.x - cx
        dy = v.co.y - cy
        r = math.hypot(dx, dy)
        if r > max_r:
            max_r = r

    if max_r < 1e-8:
        print("Max radius is zero or extremely small; cannot scale meaningfully.")
        return

    # --- Scale factor so that max_r -> target_max_radius ---
    scale = (max_r + dr) / max_r


    # Make sure it's active
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)

    # Go to Edit Mode
    bpy.ops.object.mode_set(mode='EDIT')
    bm = bmesh.from_edit_mesh(obj.data)
    # Optional: clear previous selection
    for v in bm.verts:
        v.select = False

    for v in bm.verts:

        if z_range:
            z = v.co.z
            if z < z_range[0] or z > z_range[1]:
                continue
        
        # Mark as selected (if you want to see them)
        v.select = True
        
        # Apply radial scaling in XY around center
        v.co.x = v.co.x * scale
        v.co.y = v.co.y * scale
        # z stays unchanged

    # Push changes back to the mesh
    bmesh.update_edit_mesh(obj.data)
    bpy.ops.object.mode_set(mode='OBJECT')


def add_mirror_modifier_z(obj, name="Mirror_Z"):
    """
    Adds a Mirror modifier to the given object,
    mirroring across the Z axis (Z plane).
    """

    # Ensure the object is active
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)

    # Create the modifier
    mod = obj.modifiers.new(name=name, type='MIRROR')

    # Enable Z-axis mirroring (disable X/Y unless wanted)
    mod.use_axis[0] = False  # X
    mod.use_axis[1] = False  # Y
    mod.use_axis[2] = True   # Z

    # Optional: avoid clip issues
    mod.use_clip = True

    return mod


#def delete_interior_faces(obj):
#    """
#    Deletes interior faces on a mesh object, e.g. the interface faces
#    created after applying a mirror modifier.

#    Args:
#        obj (bpy.types.Object): Mesh object to operate on.
#    """

#    if obj is None or obj.type != 'MESH':
#        raise TypeError("delete_interior_faces expects a mesh object")

#    # Make sure this object is active + selected
#    bpy.context.view_layer.objects.active = obj
#    obj.select_set(True)

#    # Ensure we're in Edit Mode
#    if obj.mode != 'EDIT':
#        bpy.ops.object.mode_set(mode='EDIT')

#    # Make sure we're in face-select mode (needed for interior selection)
#    try:
#        bpy.ops.mesh.select_mode(type='FACE')
#    except RuntimeError:
#        # In weird contexts this can fail; not usually an issue in normal use
#        pass

#    # DESELECT everything, then let Blender select only interior faces
#    bpy.ops.mesh.select_all(action='DESELECT')
#    bpy.ops.mesh.select_interior_faces()

#    # Delete selected faces (which should now be only interior faces)
#    bpy.ops.mesh.delete(type='FACE')

#    # (Optional) make normals consistent after deletion
#    try:
#        bpy.ops.mesh.normals_make_consistent(inside=False)
#    except RuntimeError:
#        pass

#    # Back to Object Mode for cleanliness
#    bpy.ops.object.mode_set(mode='OBJECT')

def delete_interior_faces(obj):
    """
    Deletes 'interface' faces in a mesh, i.e. faces that share edges with
    more than two linked faces (typical after mirror/boolean overlap).
    
    This is often more reliable than mesh.select_interior_faces() for
    cleaning up internal walls after booleans/mirrors.
    """

    if obj is None or obj.type != 'MESH':
        raise TypeError("delete_interface_faces expects a mesh object")

    # Make object active/selected
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)

    # Go to Edit Mode
    if obj.mode != 'EDIT':
        bpy.ops.object.mode_set(mode='EDIT')

    # Get BMesh
    bm = bmesh.from_edit_mesh(obj.data)
    bm.verts.ensure_lookup_table()
    bm.edges.ensure_lookup_table()
    bm.faces.ensure_lookup_table()

    # 1) Collect edges that have "too many" faces (non-manifold overlaps)
    bad_edges = {e for e in bm.edges if len(e.link_faces) > 2}

    if not bad_edges:
        # Nothing to do
        bmesh.update_edit_mesh(obj.data, loop_triangles=False, destructive=False)
        bpy.ops.object.mode_set(mode='OBJECT')
        return

    # 2) Collect faces that are fully bounded by those bad edges
    interior_faces = set()
    for f in bm.faces:
        # Face must use at least one bad edge, and *all* its edges must be bad
        if any(e in bad_edges for e in f.edges) and all(e in bad_edges for e in f.edges):
            interior_faces.add(f)

    # 3) Delete only those faces
    if interior_faces:
        bmesh.ops.delete(bm, geom=list(interior_faces), context='FACES')

    bmesh.update_edit_mesh(obj.data, loop_triangles=False, destructive=False)

    # Back to Object Mode (optional)
    bpy.ops.object.mode_set(mode='OBJECT')


def delete_object(obj):
    bpy.ops.object.select_all(action='DESELECT')

    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)
    bpy.ops.object.delete()


def boolean_cylinder_on_object(obj, operation='UNION', cylinder_radius=None, cylinder_height=None, name_suffix="_Cyl"):
    """
    Adds a Z-aligned cylinder centered on the mesh's centroid and
    applies a Boolean operation between the object and the cylinder.

    Args:
        obj (bpy.types.Object): Target mesh object.
        operation (str): 'UNION', 'DIFFERENCE', or 'INTERSECT'.
        cylinder_radius (float or None): Cylinder radius. If None, uses max XY radius of the mesh.
        cylinder_height (float or None): Cylinder height. If None, uses object bounding-box height.
        name_suffix (str): Suffix for the temporary cylinder object name.
    """

    if obj.type != 'MESH':
        print(f"Object {obj.name} is not a mesh.")
        return

    # Make sure we're in Object Mode
    if bpy.context.object and bpy.context.object.mode != 'OBJECT':
        bpy.ops.object.mode_set(mode='OBJECT')

    # Build a BMesh copy to analyze geometry (local space)
    temp_mesh = obj.data
    bm = bmesh.new()
    bm.from_mesh(temp_mesh)
    bm.verts.ensure_lookup_table()

    if not bm.verts:
        print(f"Object {obj.name} has no vertices.")
        bm.free()
        return

    # --- Compute centroid and max XY radius in local space ---
    sum_vec = Vector((0.0, 0.0, 0.0))
    max_r = 0.0

    for v in bm.verts:
        sum_vec += v.co
        r = math.hypot(v.co.x, v.co.y)
        if r > max_r:
            max_r = r

    centroid_local = sum_vec / len(bm.verts)
    bm.free()

    # Default radius: max radial distance in XY
    if cylinder_radius is None:
        cylinder_radius = max_r

    # Default height: use bounding box Z size
    if cylinder_height is None:
        # obj.bound_box is in local space; get z extent
        zs = [v[2] for v in obj.bound_box]
        bb_height = max(zs) - min(zs)
        # Fallback if extremely thin
        cylinder_height = bb_height if bb_height > 1e-5 else 1.0

    # Convert local centroid to world space
    world_center = obj.matrix_world @ centroid_local

    # --- Create cylinder, axis aligned to Z ---
    bpy.ops.mesh.primitive_cylinder_add(
        radius=cylinder_radius,
        depth=cylinder_height,
        location=(
            world_center.x,
            world_center.y,
            world_center.z + cylinder_height / 2.0
        )
    )
    cyl_obj = bpy.context.active_object
    cyl_obj.name = f"{obj.name}{name_suffix}"

    # --- Add Boolean modifier to target object ---
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)

    op = operation.upper()
    if op not in {'UNION', 'DIFFERENCE', 'INTERSECT'}:
        op = 'UNION'

    bool_mod = obj.modifiers.new(name="Cyl_Boolean", type='BOOLEAN')
    bool_mod.operation = op
    bool_mod.object = cyl_obj

    # Apply Boolean modifier
    bpy.ops.object.modifier_apply(modifier=bool_mod.name)

    # Delete the temporary cylinder
    bpy.ops.object.select_all(action='DESELECT')
    cyl_obj.select_set(True)
    bpy.ops.object.delete()


def join_objects_in_collection(collection_name, new_name="JoinedObject"):
    """
    Joins all MESH objects inside a collection into one mesh object.

    Args:
        collection_name (str): Name of the collection.
        new_name (str): Name for the resulting joined object.

    Returns:
        bpy.types.Object or None
    """

    # Get the collection
    if collection_name not in bpy.data.collections:
        print(f"Collection '{collection_name}' does not exist.")
        return None
    
    coll = bpy.data.collections[collection_name]

    # Filter to mesh objects only
    mesh_objs = [obj for obj in coll.objects if obj.type == 'MESH']

    if len(mesh_objs) < 2:
        print("Collection needs at least 2 mesh objects to join.")
        return None

    # Ensure we are in Object Mode
    if bpy.context.object and bpy.context.object.mode != 'OBJECT':
        bpy.ops.object.mode_set(mode='OBJECT')

    # Deselect everything
    bpy.ops.object.select_all(action='DESELECT')

    # First mesh becomes the active one
    active_obj = mesh_objs[0]
    bpy.context.view_layer.objects.active = active_obj

    # Select all mesh objects
    for obj in mesh_objs:
        obj.select_set(True)

    # Join them
    bpy.ops.object.join()

    # Rename the resulting object and its mesh
    active_obj.name = new_name
    if active_obj.data:
        active_obj.data.name = f"{new_name}_Mesh"

    return active_obj


###############################
# Example 1: Hollow Star

h = 4
t_wall = 1.2
gap = 2

# Star
my_obj = create_star_edges(num_points=6, outer_radius=10, inner_radius=7, location=(0, 0, 0), collection_name='star')

extrude_edges(my_obj, height=h)

last_obj = my_obj
for i in range(12):
    my_obj_i = duplicate_object(last_obj, collection_name='star')
    # extrude and shift last_obj
    extrude_faces_along_normals(last_obj, distance=t_wall)
    scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
    mod = add_mirror_modifier_z(last_obj)
    bpy.ops.object.modifier_apply(modifier=mod.name)
    delete_interior_faces(last_obj)
    # scale copy
    scale_object_xy_by_max_radius(my_obj_i, dr=(t_wall+gap))
    last_obj = my_obj_i
# extrude and shift final copy
extrude_faces_along_normals(last_obj, distance=t_wall)
scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
mod = add_mirror_modifier_z(last_obj)
bpy.ops.object.modifier_apply(modifier=mod.name)
delete_interior_faces(last_obj)
_ = join_objects_in_collection('star')


###############################
# Example 2: Hollow Polygon

h = 4
t_wall = 1.2
gap = 2

# Pentagon
my_obj = create_polygon_edges(name="pentagon", num_points=5, radius=10.0, location=(0, 0, 0), collection_name='pentagon')

extrude_edges(my_obj, height=h)

last_obj = my_obj
for i in range(12):
    my_obj_i = duplicate_object(last_obj, collection_name='pentagon')
    # extrude and shift last_obj
    extrude_faces_along_normals(last_obj, distance=t_wall)
    scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
    mod = add_mirror_modifier_z(last_obj)
    bpy.ops.object.modifier_apply(modifier=mod.name)
    delete_interior_faces(last_obj)
    # scale copy
    scale_object_xy_by_max_radius(my_obj_i, dr=(t_wall+gap))
    last_obj = my_obj_i
# extrude and shift final copy
extrude_faces_along_normals(last_obj, distance=t_wall)
scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
mod = add_mirror_modifier_z(last_obj)
bpy.ops.object.modifier_apply(modifier=mod.name)
delete_interior_faces(last_obj)
_ = join_objects_in_collection('pentagon')


###############################
# Example 3: Filled Polygon

h = 4
t_wall = 1.3
gap = 2
filled = True

# Hexagon
my_obj = create_polygon_edges(name="filled polygon", num_points=6, radius=10.0, location=(0, 0, 0), collection_name='filled polygon')
extrude_edges(my_obj, height=h)

last_obj = my_obj
for i in range(12):
    my_obj_i = duplicate_object(last_obj, collection_name='filled polygon')
    if filled and i == 0:
        last_obj = create_polygon_edges(name="filled polygon", num_points=6, radius=10.0+t_wall, location=(0, 0, 0), collection_name='filled polygon')
        extrude_edges(last_obj, height=h, cap=True)
        scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
        mod = add_mirror_modifier_z(last_obj)
        bpy.ops.object.modifier_apply(modifier=mod.name)
        delete_interior_faces(last_obj)
        boolean_cylinder_on_object(last_obj, cylinder_radius=2.5, cylinder_height=30.0)
        delete_object(my_obj)
    else:
        # extrude and shift last_obj
        extrude_faces_along_normals(last_obj, distance=t_wall)
        scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
        mod = add_mirror_modifier_z(last_obj)
        bpy.ops.object.modifier_apply(modifier=mod.name)
        delete_interior_faces(last_obj)
    # scale copy
    scale_object_xy_by_max_radius(my_obj_i, dr=(t_wall+gap))
    last_obj = my_obj_i
    
# extrude and shift final copy
extrude_faces_along_normals(last_obj, distance=t_wall)
scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
mod = add_mirror_modifier_z(last_obj)
bpy.ops.object.modifier_apply(modifier=mod.name)
delete_interior_faces(last_obj)
_ = join_objects_in_collection('filled polygon')



###############################
# Example 4: Filled Star

h = 4
t_wall = 1.2
gap = 2
filled = True

# Star
my_obj = create_star_edges(num_points=6, outer_radius=15, inner_radius=10, location=(0, 0, 0), collection_name='filled star')
extrude_edges(my_obj, height=h)

last_obj = my_obj
for i in range(12):
    my_obj_i = duplicate_object(last_obj, collection_name='filled star')
    if filled and i == 0:
        last_obj = create_star_edges(num_points=6, outer_radius=15+t_wall, inner_radius=10+t_wall, location=(0, 0, 0), collection_name='filled star')
        extrude_edges(last_obj, height=h, cap=True)
        scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
        mod = add_mirror_modifier_z(last_obj)
        bpy.ops.object.modifier_apply(modifier=mod.name)
        delete_interior_faces(last_obj)
        boolean_cylinder_on_object(last_obj, cylinder_radius=2.5, cylinder_height=30.0)
        delete_object(my_obj)
    else:
        # extrude and shift last_obj
        extrude_faces_along_normals(last_obj, distance=t_wall)
        scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
        mod = add_mirror_modifier_z(last_obj)
        bpy.ops.object.modifier_apply(modifier=mod.name)
        delete_interior_faces(last_obj)
    # scale copy
    scale_object_xy_by_max_radius(my_obj_i, dr=(t_wall+gap))
    last_obj = my_obj_i
    
# extrude and shift final copy
extrude_faces_along_normals(last_obj, distance=t_wall)
scale_object_xy_by_max_radius(last_obj, dr=-h, z_range=[h-0.1, h+0.1])
mod = add_mirror_modifier_z(last_obj)
bpy.ops.object.modifier_apply(modifier=mod.name)
delete_interior_faces(last_obj)
_ = join_objects_in_collection('filled star')
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