Tutorial how to model a propelling pencil (5)

Part 2
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Step 1:
open a sketch on the front plane
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Step 2:
draw shown lines
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Step 3:
add shown lines
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Step 4:
continue your sketch like this
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Step 5:
add a circle. please attention shown places. select circle type first. then click on shown points. then enter the radius.
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Step 6:
use trim command
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Step 7:
add a spline
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Step 8:
hold on shown point and drag it. enter the shown volues
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Step 9:
add the last lines
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Step 10:
use trim command,
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Step 11:
your sketch must be like shown. please check it
next: http://grabcad.com/questions/tutorial-how-to-model-a-propelling-pencil-6