Rapid Prototyping


Rapid prototyping is a technology used to rapidly construct solid objects using three-dimensional computer aided design (CAD) data. The first technique in prototyping, stereolithography, was develop in the late 1980′s to produce prototype parts and models. In todays rapid prototyping techniques, parts can be manufactured in near production-quality in relatively small numbers, sometimes eliminating the use of injection molded parts.

Among the obvious advantages of rapid prototyping are:

  1. costly faulty designs can be reduced early in the development stage,
  2. effective communications between marketing, engineering, manufacturing, and purchasing,
  3. development time can be reduced,
  4. minimize engineering changes

These advantages greatly benefits the product development process in terms of cost, quality, and lead-time.

Rapid prototyping process:

  1. 3D CAD model is converted to Stereolithography (.STL) format.
  2. The Rapid Prototyping machine processes the STL file layer by layer.
  3. Manual finishing and cleaning.

Mold Design Using Solidworks

Solidworks is a nice tool to help you design molds. It is easy to learn with its intuitive user interface and easy to use for experienced users.

Of course you must have the necessary knowledge of fundamentals of mold design and mold making in order to use this tool to its full potential.

This video is very helpful for aspiring mold designers using Solidworks.

Free 3D CAD: CoCreate Modeling PE 3.0

I received this email from PTC 2 days ago…

The latest version of CoCreate Modeling PE, the world’s first free explicit 3D CAD software, is now available.

Download it today, and get all the flexibility of our standard CoCreate Modeling 3D CAD system free for assemblies up to 60 parts.

New in CoCreate Modeling PE 3.0:

  • Real-time explicit modeling
  • Context-sensitive mini toolbars for fast access to commands
  • Dimension-driven design changes
  • Support for Microsoft Windows 7
  • And much more …

Are you interested in free 2D CAD?

Free 2D CAD for DWG files: an alternative to Autocad

Yesterday, while surfing the internet looking for new tools for mold design, I discovered DraftSight, a 2D CAD tool from the Dessault Systemes. DraftSight is available for free download. Is it going to be valuable tool for mold design? One way to find out…

I downloaded the installation file (about 42Mb) to give it a try. The installation was quick and easy. I have to send my email to activate the software.

The interface has a clean layout and it has a command line, much like Autocad. Unfortunately for me, I use a very different 2D CAD software at work.

Below are my observation about DraftSight.

  • FREE download for everyone. Professionals or students.
  • Performance is slower than my 2D CAD.
  • Very Autocad like. Therefore, difficult to use… at least for me.
  • LINUX version will be available later this year. This is good news.

I do not know for how long DraftSight is going to be free, so download it now.

Are you more interested in free 3D CAD tool?