Archive for the ‘Shark’ Category

Project of the Month: A coffee cup that put all others to shame!

Monday, February 20th, 2017

You’ve had some experience doing some 3D modeling in ViaCAD and want to take your design skills to the next level. This project combines many of ViaCAD’s adaptable 3D tools to produce an impressively useful result: a coffee cup!

In the video, we see that the first step is to pull the Subdivision toolset into the work area.

 

 

This is important because the bulk of the work in creating the coffee cup will be done using these tools – having them at the ready makes the process much faster.

Bonus Tip: In the ‘View’ dropdown menu, you will see the following viewpoints – Right Side, Front, Top, Left side, Back, Bottom, Isometric, and Trimetric. This ‘Cup’ project uses a variety of views but it primarily starts in the ‘Isometric’ view and the ‘Right Side’ view.

Designing the Cup

To create the base of your coffee cup, select the center point circle tool and click the intersection of the x, y, and z axes, expanding it until the diameter reaches 3.5 inches, which can be specified in the data entry window.

 

 

 

 

Next, select the “Extrude Mesh” tool in the subdivision pallet. Making sure the circle is highlighted, select a point along the z axis that is slightly distant from the base. In the data entry window, you can change the length of your extruded mesh to however tall you want your coffee cup to be. For the sake of the video change the length to 4.5 inches.

 

 

 

 

In the same data entry window change the number of distributions around the circle from four to 15.

You should now see a cylinder with openings on each end. To close those openings, use the ‘Fill Hole’ tool, again located in the subdivision tool pallet.

 

 

 

 

With the ‘Fill Hole’ tool selected, make sure the drop down menu in the top bar says ‘close edge’ NOT ‘close all’. This will ensure that the ‘Fill Hole’ centers in the middle of the circle rather than on one of the sides. On the top and bottom of the cylinder select one of the sides and the ‘Fill Hole’ tool will do the rest.

At this point you can choose what will be the top of your coffee cup and angle it out. You can do this by selecting all the vertices on the top face and scaling them out using the gripper tool.

 

 

 

 

 

 

 

 

Once you’re satisfied with the basic shape of your cup you can use the ‘Add Loop’ tool and the gripper to cut out the center. Focusing on the top of your cup (the end you extended using the gripper tool), select the ‘Add Loop’ tool, select a triangle at the top of the cylinder, and then select the distance from the edge which will represent the thickness of your cup. This should create a loop around the inside of the top surface of the cylinder.

Use the ‘Deep Select’ tool to select each of the triangles on the top of the cylinder – holding shift as you click each shape. With each shape selected, you can now use the gripper tool to push them into your 3D model. Hold the ‘alt’ key on mac, or the ‘ctrl’ key on PC, click the Z arrow of the gripper tool, and push it down into the cup.

In the video, the view is changed to ‘Wire Frame’ so the modeler can inspect the inside of the cup and make sure the thickness of the walls and base are even.

 

 

 

Deselect the wire frame so you can view your 3D model. You’ve finished the rough body of your coffee cup!

Smoothing it Out

In the video the model is subdivided twice to smooth out a lot of the shapes. After you subdivide your design you will see some of the edges still have some geometrical sharpness. A great trick to eliminate this, which the video goes over, is using the ‘Add Loops’ tool near the edges of the modes to smooth them out.

 

 

 

 

You can add as many loops as you feel is necessary, but we recommend loops close to the edge of the open side of the cylinder, as well as the bottom (as demonstrated in the video).

Making a Handle

To add a handle on the outside of your cup, use the ‘Add Loop’ tool on the outside of the cylinder, creating two pairs of loops – one toward the top and one toward the bottom.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

With the ‘Deep Select’ tool click on one of the rectangles created by the ‘Add Loop’ tool. When the gripper tool appears, ‘alt’ or ‘ctrl’ click on the Z arrow and extrude the rectangle from the cylinder about an inch. Do the same with the bottom rectangle.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tilt the extruded facets toward each other by 45 degrees – precisely specifying using the data entry window.

To finish the handle, use the bridge tool to connect the two extruded facets. Simply click on the first side, and then on the second and the ViaCAD will do the rest.

Bonus Tip: To eliminate any possible frustrations with the ‘Bridge Tool’, make sure you have selected ‘facet’ and not ‘edge’ in the drop down window. Doing this should make the process a breeze.

You can subdivide your mesh one more time and there you have it – your own coffee cup!

*The remainder of the video goes into tools that are only available in Shark products.

CAD Tip of the Month: Subdivision

Tuesday, January 17th, 2017

Tip Level: Intermediate

The subdivision tool, which is a part of the new quad mesh tool palette, is one of the most useful 3D modeling features in ViaCAD Pro and Shark.

Essentially, the subdivision tool is used to take the 3D objects and models you’ve created using our meshing tools and smooth out their surfaces and edges. This process gives your designs a more finished and clean look. These finished subdivided meshes are compatible with 3D printing, conversion to solids, rendering, and animation.

When using subdivision modeling, our CAD software represents a smooth surface using a simple, low polygon count defined by control points. In the image below you can see a block mesh with four points. This object is subdivided three times, each time making the edges of the mesh smoother.

A great example of this process can be found in the video below. This concept to creation of a 3D spoon, which you can find the tutorial for here, shows you how to take a cube you’ve created in ViaCAD pro or Shark and turn it into the head of a spoon using the subdivision tool.

Subdivision won’t take up a large amount of your time when you’re creating 3D designs, in fact if you know how to use it effectively it is the quickest way to take an abstract creation and turn it into a finished product.

The next video, which takes you through the process of making a coffee cup using mesh tools, shows again how easy it is to use subdivision in your projects. At around the three minute mark you can see the process of turning a 15 sided cylinder into what instantly looks like the main body of a coffee mug.


As well as being extremely useful in basic projects, subdivision is a tool used in the most complex digital worlds. Subdivision meshes are popular in film and animation where very large scenes are composed of low polygon counts that render at high resolutions using subdivision. Companies such as Pixar have successfully used subdivision meshes since 1996 and continue to play an important role in their development.

Regardless of the difficulty of your project, our subdivision modeling tool will prove to be useful and is another reason PunchCAD software is the perfect choice for your next 3D project.

CAD Tip of the Month: Push/Pull Modeling

Monday, December 12th, 2016

Tip Level: Beginner

 

One of the most useful and flexible PunchCAD features is the push/pull modeling tool. What is push Pull modeling? Push/pull allows you to take your 2D shapes and bring the faces of those shapes into 3D space.

 

Push/Pull Modeling Tool

Additionally, you can add or remove material on an existing 3D face based on your project needs. With both 2D shapes and 3D objects just click on the center of the surface you want to manipulate, and push/pull from there.

 

The video below does a wonderful job of showing you the basics of turning 2D shapes into 3D objects, then manipulating those objects using nothing but the push/ pull tool.

 

 

The video also demonstrates our CAD software’s recognition of curves and lines that have been drawn onto faces. With our 2D/3D modeling tools you can draw and manipulate additional shapes onto faces, allowing for flexible addition and subtraction in your modeling projects.

 

Push/pull always works in a direction perpendicular to the surface, and only works on surfaces (not edges).

 

A snag you might run into when using this tool is not being able to push/pull curved shapes that aren’t in the major planes. The fix to this problem is quite simple (as is demonstrated in the video). When this happens, use the ‘WorkPlane’ tab to click ‘select objects’, and once your object is selected go back into the ‘WorkPlane’ tab and click ‘Show Work Place’. From there you can go right into the Push/Pull tool easily.

There are numerous applicable uses for this tool in our CAD software, and we recommend practicing with it on one or several projects. Once you master it you’ll find uses for it all over the place. From doorframes to silverware , our push/ pull modeling tool helps you create precise and specific models with ease!