Tutorial how to make engine part 8
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Piston-2
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Step 1:
draw shown sketch on the front plane
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Step 2:
use cut extrude command
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Step 3:
use section view button
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Step 4:
open a sketch on the front plane and draw shown sketch
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Step 5:
add an axis
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Step 6:
use cut revolve command
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Step 7:
your piston is ready to use.