creating assy from a broken up sketch

I would like to have one master sketch with numerous parts drawn on it.
Then I would like to "break" this sketch into a the bunch of parts
(all flatstock) and put all the parts together in an assy which will
automatically update when I change the master sketch. How do I do it?

 

Draw the flatstock as a single part. Use your master sketch to drive a
split feature (Insert>Features>Split). Then right click on the split
feature and select Create Assembly.

 

That would work, but if you have any overlapping pieces that would be a
problem.
I would make a single sketch for all of my components, and then extrude
using the "Selected Contours" method (see help under contour selection).
Let me know if you need more help.

HTH,
Muggs

 

How about this?

1. In a new assembly, create an assembly sketch as your master sketch.
2. Insert however many parts you need. Make sure you mate all of the parts
to the origin of the assembly.
3. Edit each part and derive the master sketch from the assembly to each
part. The sketches will be shown NOT fully defined. There are no problems
with this as long as you mated all of the parts to the origin as stated
before.
4. Now open each part and use the derived sketch to convert geometry from,
and control features.
5. As long as you are just changing the master sketch geometry by resizing
and such, everything will update just fine, remarkably fast. If you were to
change the master sketch by adding or subtracting sketch geometry, there may
be some errors to clean-up in some of the parts. But they are usually quick
and easy to fix.

I use this method almost exclusively in mold design for splitting up
inserts. However, I create at least 3 sketches (one on each orthogonal
view), and derive all 3 of these into each part, on the appropriate plane.
I use all of these derived sketches to reference from instead of anything
in-context in the assembly. The great thing about this method over actually
converting geometry from the master sketch in-context is speed. For some
reason, derived sketches take WAY less time than in-context sketch relations
or feature relations. It is actually very fast.

 

The derived sketch itself (in the part) never breaks... However any
sketches/features in the part below the derived sketch that refers to it,
could potentially break if changes are made to the master sketch such as
deleted sketch geometry and such. Usually this are fairly quick and easy to
fix unless the sketch geometry completely changes (i.e. delete all sketch
geometry and redraw). Repairs in these cases can take a bit of time. You
just have to develop habits on how you create your master sketches to
minimize this potential. You tend to figure this out after a while.
Actually, I don't have things break very much anymore now that I have
figured out some of these techniques. Things usually just update, and
update fast I might add.