Brep vs Visrep Models

Brep vs Visrep Models

What are the advantages of Brep vs Visrep models, and how do you tell them apart? Brep Models Brep refers to Boundary Representation. As the name suggests, the boundary between solid and non-solid geometry is in view here, the solid geometry being a collection of interconnected surfaces. This is a mathematically precise representation of geometry. Depending on the format and the CAD software you have in your possession, the features and underlying sketches may be editable, or the shapes may be editable – but generally speaking, if you don’t have the CAD system used to create the file, you cannot edit the features or sketches unless you run a...
Optimizing STL Output

Optimizing STL Output

30 Years of STL From a humble beginning in 1987, when STL was developed by the Albert Consulting Group for 3D Systems, the format has been become a mainstay for 3D printing and has remained virtually unchanged over all these years. The name STL was derived from STereoLithography; STL uses a series of linked triangles to roughly define the surface geometry of a 3D CAD model. General STL Optimization Guidelines Whether you’re using the STL file for 3D printing, machining, or other purposes, you’ll want to set the resolution or mesh density to meet your product or prototype requirements. If your resolution is too rough, you’ll end up losing or...
Pre-Processing for Polygon Reduction

Pre-Processing for Polygon Reduction

Pre-processing for polygon reduction is possible using polygon facet resolution settings. Since the Polygon Reduction tool starts with a default facet density, it can sometimes be useful to adjust that pre-set facet density to a higher value. More information about the Polygon Reduction tool can be found here. Change Facet Resolution Starting with a sample CAD component, you can select the model with the Single Select tool, or just “Select All”, and right click to get the Change Facet Resolution options (see figure 1): Normal: The lowest resolution option, approximately 27 segments on a cylinder or hole. Medium High: Slightly higher than normal,...
Can I convert polygonal models to CAD models?

Can I convert polygonal models to CAD models?

One question we get regularly at TransMagic is “Can I convert polygonal models to CAD models?”. Well now the answer is yes; as of release 12, TransMagic has the capability to convert polygonal formats to geometric CAD formats. I asked TransMagic’s head of development, Craig Dennis, about this process, as well as some of the benefits and challenges of the Poly to CAD process: Polygonal formats are comprised of triangular polygons vs. the true geometry in CAD files such as spheres, planes, torus, cones, free form surfaces (NURBs), etc.  The conversion from true CAD geometry to triangles is very easy (CAD to *.stl); however, the inverse, *.stl...
TransMagic Product Wizard

TransMagic Product Wizard

As of April, the TransMagic Product Wizard was launched; this is a selection tool to help you figure out which TransMagic products are a good fit for you needs. The product wizard is available on the products page here. Simply select the radio buttons for the functionality you need, and the suggested core product and add-ons will automatically populate the area below. Want to try another set of options? Just check and uncheck radio buttons at will and the suggested configuration will change dynamically. Here’s a brief summary of the TransMagic Product Wizard View The View tools are included in all TransMagic core products. View All Major 3D Formats: At...
Do You Have the Magic Button?

Do You Have the Magic Button?

‘Any sufficiently advanced technology is indistinguishable from magic’ – Arthur C. Clark The Magic Button The Magic Button is what you need at any given time; when you have a bad CAD model, the magic button is the Auto Repair button. When you have a CAD file you need to view, the magic button is the Open button. When you have a format you need to translate to, the magic button is the Save As button. And when you have two files you need to compare, the magic button is the Analyze button. It’s often a single button because that’s how TransMagic was developed, with simplicity in mind; sure, there are settings you can adjust if you...