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78 lines
2.1 KiB
Python
78 lines
2.1 KiB
Python
from build123d import *
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pip_count = 6
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lego_unit_size = 8
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pip_height = 1.8
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pip_diameter = 4.8
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block_length = lego_unit_size * pip_count
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block_width = 16
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base_height = 9.6
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block_height = base_height + pip_height
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support_outer_diameter = 6.5
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support_inner_diameter = 4.8
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ridge_width = 0.6
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ridge_depth = 0.3
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wall_thickness = 1.2
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# Draw the bottom of the block
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# Start with a Rectangle the size of the block
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plan = Rectangle(width=block_length, height=block_width)
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# Subtract an offset to create the block walls
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plan -= offset(
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plan,
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amount=-wall_thickness,
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kind=Kind.INTERSECTION,
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)
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# Add a grid of lengthwise and widthwise bars
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locs = GridLocations(x_spacing=0, y_spacing=lego_unit_size, x_count=1, y_count=2)
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plan += locs * Rectangle(width=block_length, height=ridge_width)
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locs = GridLocations(lego_unit_size, 0, pip_count, 1)
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plan += locs * Rectangle(width=ridge_width, height=block_width)
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# Substract a rectangle leaving ribs on the block walls
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plan -= Rectangle(
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block_length - 2 * (wall_thickness + ridge_depth),
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block_width - 2 * (wall_thickness + ridge_depth),
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)
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# Add a row of hollow circles to the center
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locs = GridLocations(
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x_spacing=lego_unit_size, y_spacing=0, x_count=pip_count - 1, y_count=1
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)
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ring = Circle(support_outer_diameter / 2) - Circle(support_inner_diameter / 2)
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plan += locs * ring
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# Extrude this base sketch to the height of the walls
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lego = extrude(plan, amount=base_height - wall_thickness)
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# Create a box on the top of the walls and the top of the block
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lego += Pos(0, 0, lego.vertices().sort_by().last.Z) * Box(
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length=block_length,
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width=block_width,
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height=wall_thickness,
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align=(Align.CENTER, Align.CENTER, Align.MIN),
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)
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# Create a workplane on the top of the block
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plane = Plane(lego.faces().sort_by().last)
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# Create a grid of pips
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locs = GridLocations(lego_unit_size, lego_unit_size, pip_count, 2)
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lego += (
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plane
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* locs
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* Cylinder(
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radius=pip_diameter / 2,
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height=pip_height,
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align=(Align.CENTER, Align.CENTER, Align.MIN),
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)
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)
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if "show_object" in locals():
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show_object(lego, name="lego")
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