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.cursor/skills/autocad-mcp/examples/mechanical-part.md

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+# Example: Flange with Bolt Pattern
+
+Create a circular flange plate with bolt holes using polar array.
+
+## Setup
+
+```
+drawing_new()
+template_apply_layers("mechanical")
+# Creates: OUTLINE, CENTERLINE, HIDDEN, DIMENSIONS, NOTES, SECTION, DETAIL
+```
+
+## Draw Flange Outline
+
+```
+layer_set_current("OUTLINE")
+
+# Outer flange circle (diameter 200mm)
+entity_create_circle(cx=0, cy=0, radius=100)
+# Returns: {handle: "F1", ...}
+
+# Inner bore (diameter 50mm)
+entity_create_circle(cx=0, cy=0, radius=25)
+# Returns: {handle: "F2", ...}
+```
+
+## Add Centerlines
+
+```
+layer_set_current("CENTERLINE")
+
+# Horizontal centerline
+entity_create_line(x1=-120, y1=0, x2=120, y2=0, linetype="CENTER")
+
+# Vertical centerline
+entity_create_line(x1=0, y1=-120, x2=0, y2=120, linetype="CENTER")
+```
+
+## Create Bolt Hole Pattern
+
+```
+layer_set_current("OUTLINE")
+
+# First bolt hole on bolt circle (PCD = 150mm diameter, so radius = 75mm)
+entity_create_circle(cx=75, cy=0, radius=6)
+# Returns: {handle: "B1", ...}
+
+# Create polar array: 6 holes evenly spaced
+entity_array_polar(handle="B1", center_x=0, center_y=0, count=6, angle=360)
+# Returns: list of 5 new handles (original + 5 copies = 6 total)
+```
+
+## Add Dimensions
+
+```
+layer_set_current("DIMENSIONS")
+
+# Outer diameter
+dimension_diameter(x1=-100, y1=0, x2=100, y2=0)
+
+# Inner bore diameter
+dimension_diameter(x1=-25, y1=0, x2=25, y2=0)
+
+# Bolt circle diameter
+dimension_radius(center_x=0, center_y=0, radius=75, angle=45)
+
+# Bolt hole diameter
+dimension_diameter(x1=69, y1=0, x2=81, y2=0)
+```
+
+## Add Notes
+
+```
+layer_set_current("NOTES")
+
+entity_create_mtext(
+    text="FLANGE PLATE\P6x M12 HOLES ON PCD 150\PMATERIAL: SS304",
+    x=-120, y=-140,
+    width=240, height=5
+)
+```
+
+## Create Block from Bolt Hole
+
+```
+# Select all bolt hole entities and create a reusable block
+# (Get handles from the array result)
+block_create_from_entities(
+    name="BOLT_PATTERN_6x150",
+    handles=["B1", ...],  # all bolt hole handles
+    base_x=0, base_y=0
+)
+```
+
+## Verify
+
+```
+analysis_entity_stats()
+# Expected: circles, lines, dimensions, mtext
+
+analysis_bounding_box()
+# Expected: approximately -120 to 120 in both axes
+
+drawing_save("C:/drawings/flange.dxf")
+```