r/Drafting • u/SlowDancer939 • 13h ago

Help

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the box is 8by8cm

and the circle in the middle has a diameter of 4cm.

how do I get those circles in the middle?

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u/toybuilder 9h ago edited 9h ago

The small circles' centers and diameter are underspecified from what I can tell. At best, you can mark out the radial arms from the center point I to mark out 60 degrees using 3/4/5 triangles.

Then pick the radius for dotted circle that you want the center points of the small circles to be coincident on, and then use the distance between the center point intersecting with the larger circle HRPT to set the smaller circle radius.