Thursday, April 7, 2016

Three Dimensions Are Not Enough to Fabricate Products

The next article published first at  3DPrint.com
 https://3dprint.com/127328/3-dimensions-are-not-enough/

Over the past two decades, the 3D printing industry made its way to become the best choice for fast prototype production also known as rapid prototyping. Nowadays, with powder bed technology for additive manufacturing and the use of metal and polymer production ready materials, the industry’s focus has shifted to the next phase, serial fabrication of end products using Additive Manufacturing (3D printing).
Serial production with Additive Manufacturing is changing the way the industry is doing business. At companies like Toyota, Israel Aircraft Industries, K├╝licke & Soffa, and UnderArmour, it’s already part of the normal course of business. The new technology, which allows fabrication everywhere, anytime, without the need for tooling, can eliminate most of the supply chain and shorten the delivery line between manufacturers and customers. Producing by pressing a print button allows a minimal interaction between the designer/brand and the manufacturer. It also allows the brand to distribute its products digitally and have them manufactured by a worldwide network of 3D printer providers within a short distance from the end customer.
By simplifying the manufacturing and delivery process, every brand can become a virtual LEAN manufacturer that can produce and supply directly, on demand, to its customers. The product has the same manufacturing cost per item (!), whether it’s one of its kind or one of thousands of the same product, and the rapid manufacturing process eliminates the need to stock inventory in a warehouse. A huge cost savings to any product company!
gr1This new economy, made possible by 3D printing, is based on digital manufacturing from a 3D design file, typically a 25 year old format named STL. It is the only format that every 3D printer’s software in the world can read and process. The STL format holds the 3D geometry only and no other dimensions of production. The most common file delivery system is email. The STL file is sent to the manufacturer without any information or restriction regarding the manufacturing process, materials, geometric tolerances, part resolutions, part orientation, digital rights, and so on. There are several problems with this. First, most of the time the designer has to attach some text, word or excel files, pdf, drawings, pictures, and so on to give production and assembly instructions. Second, the STL file is completely “naked” and might be inadvertently changed on the way to the manufacturer. In addition, if someone unscrupulous were to get this STL file they could produce as many items as they like from it.
gr3For the industry to move forward with production of end products, these shortcomings must be fixed. The brand should be able to wrap some meta data around the product that can specify the production requests (3D printing technology, material, etc). Protecting the number of items that can be produced from a file at the same time will alleviate brand fears of theft of IP and economic rights. With traffic of more than a million files per day from designers to manufacturers worldwide, the industry’s inability to solve these problems costs a lot and creates many frustrations for the designer, manufacturer, and customer triangle.
For the 3D printing industry to grow to its full potential, the industry most adopt a workflow that can ensure that each 3D design file has a monovalent specification of all dimensions of the planned manufacturing process. A secure specification and tracking system is needed to promise that end users are getting the same product they are paying for, made from the right material in the right process and reflecting the designer’s intent. Final product performance is a key factor for brands, designers, and engineers who have a professional reputation to uphold which largely relies on the manufacturing process.

Sunday, December 20, 2015

3D printing limitations

The next map describe some of the limitation when bring the 3D printing technology to the demanding manufacturing market.  
The best way to success with 3D printing is to adjust the design to the technology and to find the unique leverage that additive manufacturing can give over the traditional technologies for each project.

Polymers are the most common material when it come to 3D printing but, the selection between types of polymers is very limited.

3D printers for the manufacturing market

I find it useful to classify the 3D printers for the manufacturing market to four segments. The major segment, for producing usable parts, is Additive MANUFACTURING. The Auxiliary segment is for producing parts that support anther industrial process like investment casting or sand casting. The only printers that available today for mass production of parts (Short series) are the powder bed printers. SLS for plastic and SLA and EBM for metal. No other technology can give a fight to powder when it come to the number of parts per job and the mechanical properties of the printed parts.



Thursday, April 2, 2015

Onshape - Is it the beginning of a new CAD era?





SolidWorks and Solid Edge have been rolled out in 1996, Microsoft was then in the midst of taking over the world of computing with Windows 95 operating system. For the pioneers CAD systems it was an opportunity to run, for the first time a modern looking, robust and easy to use 3D CAD system on a cheap home PC. Twenty years later, and Windows is no longer the dominant operating system it was  , Android, iOS, Linux, etc. are everywhere and the keyword in recent years is cloud computing.  Most of us are already using cloud computing every day. Google services, Facebook, LinkedIn and most email services are cloud.

3D CAD cloud computing is not a new thing, Autodesk offers many services in the cloud for several years. AutoCAD 2D cloud platform (AutoCAD 360) and Fusion 360 offers impressive capabilities. SolidWorks has at least two active Cloud Computing projects and SOLIDWORKS Mechanical Conceptual is at the market for over a year now.


Six months ago, I have been asked by Onshape to try the early version and give feedback on the performance in Israel, a relatively remote location for the servers. I will try here to answer some intriguing questions about the program. Since this is still in beta and because the company ensures they will add new capabilities very soon, I cannot still find it appropriate to compare it to other programs in terms of capabilities.

Why Onshape so interesting?
Two main reasons:
A. Onshape is the first new history base CAD system since Autodesk Inventor from 2000!
B. The team behind Onshape is the same team that built the most successful solid modeler ever - SolidWorks.

What is Onshape?
In short - a combination of Google Docs and SolidWorks in the cloud.
And in a few sentences:
A 3D CAD design cloud software for parts and assemblies, a history base solid modeler with direct editing capabilities. The software runs on cloud servers without any local installation on the user's machine so it works from the web browser without using files.
Onshape came with PDM capabilities (product management). The system can open, edit and save-to the most common CAD files including native files (without history)
Onshape allows several users access the same project simultaneously Online! And simultaneous changes are updated on all computers!

Who it is suitable?
Anyone who needs a 3D design engineering CAD for sharing and examination of .
engineering design, for those who want to learn to use a solid design program and to whom the current software are out of reach in terms of the time need to spend to master a CAD software or in terms of the initial investment for purchase
Anyone familiar with SolidWorks software, Inventor, Solid Edge, Creo etc., can use Onshape immediately and without difficulty. The interface is clear and simple and method of work is reminiscent of a mix between Inventor to SolidWorks. For example, to extrude sketch you can choose between add or remove material at the same command window (Inventor style). As in SolidWorks, the software is based on Parasolid kernel and D-cubed constrain manager, both from Siemens.
Users who are not experienced with Solid software will find that Onshape is a great way to start learning. The software does not require powerful and expensive computer, nor installation, and the UI is simple and clear. There are guides and detailed training videos and an active forums with employees happy to help and discuss on any topic.
Onshape would like to integrate near existing CAD systems at organization that already use 3D CAD and not necessarily replace them. For example, Onshape user can open Catia files, make changes and save to SolidWorks for detailing, documentation and so. Onshape can replace eDrawing and do a much better job in sharing projects with a client who has a  different CAD system.  

What is the price?
The business model is simple. The basic is free with 5GB limited storage and 5 active projects.
$ 100 Monthly payment will remove the limitations.

Can Onshape repeat the SolidWorks success?
Yes, because...
·       There is a need for a cloud CAD software. Autodesk Fusion 360 does not do it right, and no one else offer a professional solution today
·       It works.  SolidWroks been trying for seven years to come out with a cloud solution but just could not get acceptable performance. Onshape product works well from the start.
·       There is great demand to software among CAD users who do not want or cannot spend thousands of dollars to own a software.
·       There is a need  for real time sharing CAD information
·       The team behind the highly skilled and talented software already did it at least once.

No, because...
·       $ 100 a month for a software without drawing, simulation, Render, sheet metal and so?  INVENTOR and two SOLIDs cost the same (yearly subs) with a lot more proven capabilities developed over more than 15 years.
·       Not everyone can or are willing to entrust their precious CAD files on the cloud server of a foreign company.
·       When SolidWorks entered the market, the founders were in their early thirties, young, full of motivation and with a desire to kick the industry in the butt. They develop the software for the young engineers who could not afford to own the expensive Pro/e.  Now, 20 years later, the SolidWorks founder team is the veteran CAD industry. When SolidWorks came out with SW 95, it was a breath of fresh air. Jon Hirschtick and his team broke the barrier on how a professional CAD software should look and feel. Instead of black, SolidWorks background was white, like MS Word, the mouse indicator was a cross, It was an interactive indicator like any decent office software. The price was lower than a 2D AutoCAD, in a single package without additional charge for modules, the API was free and new version release cycle was 6 month. Onshape missed some of the free spirit SW had.
·       They do not have Mr. Vic Leventhal inboard! Vic, with tons of charm, arrived to SolidWorks from the largest Autodesk distributor and built the best distribution network in the industry! SolidWorks owes its success to the VAR channel around the world. Onshape was born to a different reality. It is almost impossible to build a new channel today and therefore, they waive mediation and sell directly over the Internet. But, with a price tag over $ 1,000 a year for an yet to be  prove solution, the customers may hesitate before purchasing. Competitor's skilled sales representative can take opportunity to make a sale over a passive Web site.

Never the less, the future belongs to CAD in the cloud. Onshape is not the first but, the first to get it right. The question is whether they can take the market or, maybe the future is up to a bunch of talented young entrepreneurs that are working right now on an innovative and advanced software. Or, maybe the CAD veterans, Dassault, PTC Autodesk can re-invented themselves?
In the meantime, if you've read this far you owe it to yourself to go and try the software. It's free, it's fun and it's the future.

Gal Raz