Since 1930, Fisher-Price has been making some of the most popular toys of all time, many of which have been elevated to cult status by antique collectors and toy museums.

Part of the reason for the huge popularity of these toys is their ability to stand the test of time. Some of the same toys that were in production 40 years ago are still flying off store shelves today. But as technology has progressed, the same toys have become more elaborate and realistic. There are also more choices of add-ons and accessories, creating even greater variety for consumers.

Reverse Engineering a Dollhouse

Mills likes to use a recent reverse engineering job as an example of how digital manufacturing has helped make his job easier.

The Fisher-Price Loving Family Dollhouse, introduced in 1978, has become one of the more popular items in the company's long list of toys, with more than 100,000 produced each year.

About a year ago, the production mold for the dollhouse was beginning to wear and soon might begin producing flawed toys. But because the toy is so popular, the company did not want to stop the production run.

"We couldn't use the existing mold to create a new one because we couldn't take it off the line," Mills says. "So we had to come up with another way to produce a new mold."

Engineers measured the dollhouse dimensions and made drawings to recreate the general model in PTC's Pro/ENGINEER software. But there were still many intricate parts to the house - such as the bricks, ivy, trellis and a bird's nest - that would be more difficult to reproduce.

Mills sent one of the dollhouses from the production line to Mattel, Fisher-Price's parent company, to have it scanned. The STL file from the scan was then brought into Geomagic Studio to reproduce the intricate parts of the house.

"One feature that is fantastic about Geomagic Studio is the ability to take sets of point cloud data and align them in a straightforward way," says Mills. "You also have the ability to turn the point clouds into a nice polygon mesh."

"From the polygon mesh, Mills quickly created NURBS surfaces and finished up the models in Alias and Rhino CAD programs. The resulting models were accurate within .001 of an inch. The process took days rather than weeks. The data was then sent to a molding shop to finish the actual mold."

"It would have been nearly impossible to model these parts using a regular CAD program," Mills says. "We needed to get a new mold quickly to keep production running smoothly. Geomagic Studio allowed us to do that. We got very good results in a timely manner."

Growing a Digital Inventory

The dollhouse models created in Geomagic Studio were saved as IGES or STL files in the computer system for later use.

"A large part of our process now is digital. These days we don't build models, we grow them," Mills said. "We send the digital data to our rapid prototyping machines and they build the models for us overnight."

The technology will allow Fisher-Price to add more new toys to its already popular line, creating new collectors' items for adults and more learning experiences for children.

"Thirty years ago it would take 10 guys four months to create a new toy. Now you have one guy taking two weeks," he says. "This process saves me time. The faster I get one job done, the faster I can get to the next one."