Open side-bar Menu
 Jeff's MCAD Blogging

Posts Tagged ‘stereolithography’

Is A Universal File Format Possible For 3D Printing? Part 1: STL

Thursday, August 10th, 2017

Since the dawn of 3D printing, a little over three decades ago, there has been one file format that has dominated communicating with 3D printers — STL. Love it or hate it, and even with its limitations and shortcomings, STL has remained the de facto standard for the 3D printing industry. That may finally be changing, though, with the advent of more contemporary and robust file formats for 3D printing, such as AMF and 3MF. Over the next couple weeks we’ll be discussing the evolution, advantages, and disadvantages of 3D printing file formats, starting this week with STL.

 

So What Exactly Is An STL File?

Essentially, an STL file stores information about 3D models, but this format describes only the surface geometry of a 3D object without any representation of color, texture, or other common model attributes.

As it has been for three plus decades, the STL file format is still by far the most commonly used file format for communicating with 3D printers.

The true meaning of the file extension .STL has always been somewhat of a mystery. I’ve always considered it be an abbreviation of the word STereoLithography, although sometimes I have also heard it referred to as Standard Triangle Language or Standard Tessellation Language. Which is correct? Probably all of them.

 

Introduction To The STL File Format

The main purpose of the STL file format is to encode the surface geometry of a 3D object using tessellation. Tessellation is the process of tiling a surface with one or more geometric shapes with no overlaps or gaps. Having no gaps is especially important, as an object must be watertight to be printed. A good real life example of tessellation is a tiled floor.

(more…)

APSX Bringing Injection Molding To The Desktop

Thursday, February 23rd, 2017

It wasn’t all that long ago that manufacturing machines, such as 3D printers and CNC mills were relegated to the factory floor because of their size and tendency to need or produce undesirable compounds, such as coolants, smoke, chips, solvents, etc. Today, however, there are a number of desktop 3D printers and milling machines available. Until relatively recently, though, one of the major manufacturing processes that hadn’t appeared on the desktop was injection molding. That’s about to change with the advent of the APSX-PIM desktop plastic molding machine from Advanced Production Systems (APSX).

Injection molding machines are known for being large and expensive machines that require significant infrastructure, steep learning curve, and high maintenance. For these and other reasons most individual makers and small businesses don’t have access to an injection molding machine, so APSX decided to make one that could be used by organizations with budget and space constraints.

(more…)

The Dark Side of 3D Printing

Thursday, December 11th, 2014

Like a large portion of the product design and manufacturing world, I have a lot of enthusiasm for the potential of 3D printing. I have also experienced the reality of 3D printing – most of it positive, but not all by any means. In other words, 3D printing has come a long way, but it’s still got a long way to go on three fronts: hardware, software, and materials.

When I learned about and made a move to experimenting with 3D printing and other additive technologies a few years ago, I thought by now I would have had no use for subtractive technologies, such as milling and drilling. However, experience (and some hard knocks) have taught me that additive technologies cannot be used exclusively as my only tools. They are actually complementary in what I’ve come to realize is a hybrid approach that employs both additive and subtractive technologies.

Like many others who have been relatively early adopters of 3D printing, problems have been encountered – some of which can be resolved, while others continue to frustrate. Although the video below discusses problems with a specific 3D printer, they are somewhat typical for so-called “low-end” 3D printers using PLA or ABS materials (these are the only materials I currently use).

3D Printing Problems

(more…)

Kenesto: 30 day trial
SolidCAM: Cutting Webinar
MasterCAM



Internet Business Systems © 2017 Internet Business Systems, Inc.
25 North 14th Steet, Suite 710, San Jose, CA 95112
+1 (408) 882-6554 — Contact Us, or visit our other sites:
TechJobsCafe - Technical Jobs and Resumes EDACafe - Electronic Design Automation GISCafe - Geographical Information Services  MCADCafe - Mechanical Design and Engineering ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy PolicyAdvertise