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2D AutoCAD Practice Hints

Hints for Yin Yang

Circle
Center (0, 0)
Radius = 1 (or diameter = 2)

Circle
Center(0, 0.5)
Radius = 0.5 (or diameter = 1)

Circle
Center(0, -0.5)
Radius = 0.5 (or diameter = 1)

Trim→<select all> - hit enter to select all


Circle
Center(0, 0.5)
Radius = 0.25 (or diameter = 0.5)

Circle
Center(0, -0.5)
Radius = 0.25 (or diameter = 0.5)


Rotate
Select objects→select all
select base point→select center of large circle (0,0)
rotate 45°


Hatch
→brings up new tools in ribbon

 experiment:  Add a border (try out offset, or draw another circle), experiment with hatch patterns.


Hint for Ratchet Wheel

CIRCLE
Center (0,0) Diameter 38
Center (0,0) Diameter 76
Center (0,0) Diameter 254
Center (0,82) Diameter 50


ARRAY
POLAR


LINE
ROTATE 15°
LINE


 TRIM

 ARRAY  →  360°/15 = 24


 HATCH




Hint for Geneva Cam









Hints for Snowflake

Start with a few circles:


Line


ARRAY
POLAR


Create a few patterns
LINE


ARRAY
POLAR


MIRROR
Draw pattern on one side of a line, then use mirror command to copy it onto second side


ARRAY
POLAR


EXPLODE
It is impossible to trip objects in an array until you have exploded them apart.

TRIM
<select all>

OFFSET

JOIN
Join lines into a closed loop before using array to save yourself work in the future if you want to use Hatch.  (Hatch only works with closed loops)


ARRAY
POLAR


HATCH