3D Modeling Techniques Defined ZW3D vs Fusion 360 Lesson 11 Streamlined Sketching Exposed Two
An Exercise in Sketching II
I will do this part as I would have done
it on the drafting board. Basically offsetting lines. This is the
basis for what I have coined "Streamlined Sketching".
I have
to admit the Fusion 360 presenter makes this simple sketch
incredibly convoluted. Make sure you watch the Video. If you are
sketching this way you are wasting an incredible amount of time. I have done quite a few
comparisons with all of the 3D CAD programs and I have found in all the presentations an extremely
complex sketching process.
Sketching has always been a
secondary process in my design.
With IronCAD most of your
design is dragging and dropping what are called IntelliShapes in the
scene and pulling and pushing them together into a shape. We have a
Extrude Wizard that allows you to project edges for a new feature or
part. So my sketching has never utilized constraints, even though
they are available.
With ZW3D it has been a bit different. It
is a sketch based system with some primitive shapes you can use in
your design. I now use the primitive shapes more than the sketching.
It also has full constrain functionality.
But with these
comparative exercises with the other 3D CAD systems I have seen
that constrained sketching it very time consuming. I now realize
that I sketch much differently. I have transferred my descriptive
geometry skills from the drafting board (35 years ago) to the CAD
system, I have coined this "Streamlined Sketching". We basically
eliminate the Autocad-ish sketching with any constraints. Point to
point drawing is basically an architectural process not an
industrial/mechanical process where you would slide triangles, use
T-Squares or drafting machines. This is probably where the Pro/e
people defined this convoluted sketching process, costing the
industry millions of lost man hours.
I have been having a
conversation with a Industrial Design professor that seems to be
quite 3D CAD literate and he did agree that my sketching technique
was much faster but still had a hard time letting go of the
constraining function thinking it offered more precision. It is
truly too time consuming for any benefits, it there are any, it
offers.
So take a look at this exercise and tell me what you
think.
If you are interested in this subject, please free to
give me a call.
Joe Brouwer 206-842-0360
Here is the Video of the Fusion 360
presentation. You must watch as this poor fellow struggles with such a simple
sketch. If the average Solidworks clone user is wasting this much
time, engineering is costing more, adding the PLM, MBE and PMI, that
it did with manual drafting. Our engineering is based on our parts
and how efficiently we can design. I will tell you, from what I have
seen in both Fusion 360 and Solidworks, this waste of time cannot be
tolerated in a production engineering department.
ZW3D offers
much more intuitive user friendly sketching than Fusion 360. You can
Download ZW3D and give it a try.
ZW3D is very similar to Fusion 360 and the Pro/e
clones with differences that make it much more streamlined. It is very easy for those users
to get up and running with ZW3D. The unique benefits over the other systems
is the multi-object environment, for easy top down design, with the integrated drawing. You can
do complete projects (parts, assemblies and drawings) in one file.
Fusion 360
seems to be a functional 3D CAD system. I tried it years ago when
they offered it for free. I didn't like the user interface with the
history directly on the work space. I much prefer the separate
history dialog box on the left that seems to be somewhat of a
standard. Like many Autodesk products, all are just a bit too
AutoCADish for me.
The problem with Fusion 360, like all
Autodesk products, is that you can only get it by subscription. This
is not a viable option to access your CAD system. This makes
Autodesk your partner forever, and forever is a long, long time.
Let's say you own a company and you have a large amount of
engineering information. If you sell your company or a product they
have to purchase a subscription. With a perpetual system, you just
include the license or they can purchase a seat, they don't have to
be married to a system, that they may not even use.
I would do a
video, but I really am not good at it. So I will show you step by
step.
The modeling technique is
hugely responsible for the level of productivity. Those of you that
are only trained in the sketch, sketch, constrain, constrain world
are truly limited by not using the freedom of feature based design,
that is available in even the most Pro/e-ish of CAD systems. If your
designers are designing in these very unproductive and time
consuming processes it might be time to review your standard design
processes. Don't have any do you?
These have actually turned into exercises in
modeling techniques as compared to showing a more productive CAD
systems. Again, I say there are many different ways to model a part.
I see with my exposure to direct edit modelers like CADKEY, I
rarely sketch like you see the Fusion 360 fellow doing. I have always
created my basic sketches by mostly creating offsets and extending
and trimming or. It seems to be much easier. I never put in a fillet that
can be created later. What do you think? This is an
exercise in sketching. For the life of me, I do not understand how
this simple sketch can be as difficult the Fusion 360 fellow makes
it.
We set the units to mm. We will just create a sketch on XY plane.
We first create a
rectangle 65 X 24
We then create the pertinent offset
lines. We will create three vertical and three horizontal.
Now
for the 10mm circle, we allow the graphics to drive the dimension.
ZW3D sketching is very easy.
We will clean up the sketch by trimming/extending or deleting.
We then put in the angled line.
We put
in the 14 fillet.
We create the 15 mm offset from the applicable line and create a
R 15 mm circle.
I will not concern myself with the R 10 since it is basically double
dimensioning.
We
clean up the sketch with trimming/extending or deleting and we are
done with our sketch.
What are you talking about, Joe, there
are fillets and chamfers??
Why waste your time sketching when
putting in a fillet or chamber is much easier. This is what I have
called "Feature Based Modeling" as compared to "Sketch Base
Modeling" (if you can even consider sketching, modeling).
We
exit the sketch and create the extrusion to 10mm thick.
Now
for our fillet and chamfers.
Here
is the final part.
Let's create a drawing. One of the huge benefits of ZW3D is the
integrated drawing. We just click the right mouse button and select
2D sheet. (I am glad they didn't use drawing since we do not create
drawings any more, we create Associated Information Documents which
I have coined AIDs). I can tolerate 2D sheet, LOL.
Here
is the completed drawing.
It is very important that you look into
how you or your engineers are creating the parts. Streamline
Sketching and Feature Based Modeling is easy to learn and implement.
It, alone, can increase productivity 10X. Now, ZW3D with its unique
history and robust direct edit functionality can increase your
productivity another 5X or more with changes! Again, time is money
in engineering.
More on Streamlined Sketching and Feature Based Modeling.
To experience this increased level of
productivity, please download ZW3D for a 30 day evaluation. Legacy
data is no problem, ZW3D can read the native files of all of the
popular programs including the PMI data of NX, Solidworks, Catia and
Creo. ZW3D is a great replacement for the subscription only Autodesk
and PTC products.
Give me a call if you have any
questions. I can set up a skype or go to meeting to show this part
or answer any of your questions on the operation of ZW3D. It
truly is the Ultimate CAD/CAM System.
If you are interested in adding professional
hybrid modeling capabilities or looking for a new solution to
increase your productivity, take some time to download a fully
functional 30 day evaluation and play with these packages. Feel free
to give me a call if you have any questions or would like an on-line
presentation.
