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41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
from build123d import *
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from ocp_vscode import *
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# Taper Extrude and Extrude to "next" while creating a Cherry MX key cap
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# See: https://www.cherrymx.de/en/dev.html
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plan = Rectangle(18 * MM, 18 * MM)
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key_cap = extrude(plan, amount=10 * MM, taper=15)
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# Create a dished top
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key_cap -= Location((0, -3 * MM, 47 * MM), (90, 0, 0)) * Sphere(40 * MM)
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# Fillet all the edges except the bottom
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key_cap = fillet(
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key_cap.edges().filter_by_position(Axis.Z, 0, 30 * MM, inclusive=(False, True)),
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radius=1 * MM,
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)
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# Hollow out the key by subtracting a scaled version
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key_cap -= scale(key_cap, (0.925, 0.925, 0.85))
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# Add supporting ribs while leaving room for switch activation
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ribs = Rectangle(17.5 * MM, 0.5 * MM)
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ribs += Rectangle(0.5 * MM, 17.5 * MM)
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ribs += Circle(radius=5.51 * MM / 2)
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# Extrude the mount and ribs to the key cap underside
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key_cap += extrude(Pos(0, 0, 4 * MM) * ribs, until=Until.NEXT, target=key_cap)
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# Find the face on the bottom of the ribs to build onto
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rib_bottom = key_cap.faces().filter_by_position(Axis.Z, 4 * MM, 4 * MM)[0]
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# Add the switch socket
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socket = Circle(radius=5.5 * MM / 2)
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socket -= Rectangle(4.1 * MM, 1.17 * MM)
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socket -= Rectangle(1.17 * MM, 4.1 * MM)
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key_cap += extrude(Plane(rib_bottom) * socket, amount=3.5 * MM)
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show(key_cap, alphas=[0.3])
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