3DRG produces a range of architectural models, which are not only durable, but feature the finest of detail and are given an individual stamp through the use of applied colour.
By Al Dean and Greg Corke

3D ReproGraphics (www.3drg.com) produces a range of architectural models which combine the arts of traditional model making and rapid prototyping in a holistic manner. Founded and located in Los Angeles in 2004 by Brian Ehler, 3DRG grew from a traditional reprographics business which serviced the printing needs of local architects and engineers and specialised in oversized printing.

In 2002, Ehler was introduced to 3D printing by one of his architectural clients. ýHe told me there was a printer that would take an AutoCAD files and print it in 3D,¯ explains Ehler. ýNot being familiar with rapid prototyping I wasnÝt sure what he was talking about. I initially checked out the Z-Corp machine and I had a demo and I was amazed that you could actually take a digital file and print it. I was sold on the idea of 3D printing that minute.

" Our models arenÝt meant to sit behind a plexi-glass display. The ability to pick up a model and interact with it can make the difference in communicating design "

ýIt just made sense to me that architects could send files and I could deliver a physical model to them.¯ adds Ehler. ýI took the sample from the Z-Corp Machine home to show my wife and business partner, Shelly, and sold her on the idea that I could make this a new business and potentially a new industry.¯

However, despite being impressed with the forms you could create with the Z-Corp machine Ehler soon developed concerns about the durability of the models. ýI was all ready to purchase a Z-Corp machine when the model melted in the car. As much as I wanted to jump into 3D printing I wanted make the right choice of products, thatÝs when I found Stratasys,¯ says Ehler.

Like Z Corp, Stratasys is a specialist in rapid prototyping technology, but instead of using 3D printing technology which deposits resin through a print head it employs a technology called FDM (Fused Deposition Modelling) which was more suited to what Ehler wanted to achieve. ýTheir (StratasysÝ) models are printed out of ABS plastic and created at high temperatures making them sturdy and detailed at the same time,¯ explains Ehler. ýHaving the models built out of ABS plastic gives us ability to create models that are truly interactive and can be handled without the fear of breaking them.

ýOur models arenÝt meant to sit behind a Plexi-Glass display. They are truly a unique and interactive experience. The ability to pick up a 3DRG model and view it can make the difference in communicating the design.¯

For Ehler this added durability of parts was the critical factor and following an evaluation he decided to purchase two Stratasys Maxum machines. He sold his 2D reprographic firm and focused solely on 3D reprographics.