Designing cars before the age of the computer

Colin
By Colin Wood
Aug 15, 2021 | Peter Brock, concept car, automotive design

Photograph Courtesy GM

Before the advent of computer-aided design, how did automotive designers come up with new shapes and forms for the latest and greatest cars?

The answer is simpler than you might think: By hand, using lots of clay.

Read Peter Brock’s reflections on his days in the GM styling department, and how clay modeling–a once groundbreaking technology–is now a lost art form over on Classic Motorsports.

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Comments
ShawnG
ShawnG UltimaDork
8/13/21 9:35 a.m.

Bill Mitchell is a genius:

Datsun310Guy
Datsun310Guy MegaDork
8/13/21 9:42 a.m.

Yep - I always think about the cars designed first on a drafting board and they just looked fast.  

olpro
olpro Reader
8/13/21 10:00 a.m.

For anyone serious about this subject, check out THE best car design history site, bar none. My old buddy from GM Design Staff days, Gary, has assembled an amazing resource on this subject. The information is almost endless.

http://www.deansgarage.com/

pinchvalve (Forum Supporter)
pinchvalve (Forum Supporter) GRM+ Memberand MegaDork
8/13/21 10:04 a.m.

Take a minute and imagine carving this freehand, just using your imagination:

I'm sure today they use computers first and fine-tune with clay (maybe even carve the shape from a computer file) but back in the day people just willed these shapes into being with their hands. Amazing.

Appleseed
Appleseed MegaDork
8/13/21 10:50 a.m.

They used slide rules. It has yet to be equaled. 

Colin Wood
Colin Wood Associate Editor
8/13/21 11:25 a.m.

In reply to olpro :

That's really cool, thanks for sharing.

Colin Wood
Colin Wood Associate Editor
8/13/21 11:27 a.m.

It's good to see clay models are still in use today, albeit with some help from a robotic clay carver.

vwcorvette (Forum Supporter)
vwcorvette (Forum Supporter) GRM+ Memberand UltraDork
8/13/21 12:30 p.m.

I used an Amiga 3000 to design a replacement for the Fiero back in 89 in college. Made a clay model of it too. No longer have the model but have prints of the design around here somewhere.

RichardSIA
RichardSIA Dork
8/13/21 4:03 p.m.

Probably showing (off?) my age again but back when I was a lad I was gifted a model kit that was a primer on how the Clay's for auto styling were done.

Of course it had a drawing and templates to build the show car on the box lid.
But once that had been done you would know how to create anything that struck your fancy.
The clay could be reused.

CAD rendering today may present a more visually appealing finished image but you cannot hold it in your hand, or put wheels on it and roll it around the table.

I still use some of the techniques from that old kit in my fiberglass work.

frenchyd
frenchyd UltimaDork
8/13/21 5:39 p.m.

Sir William Lyons used to have a steel  preliminary model brought by his house so he could study the shadow lines in the setting sun. They called it Fag packet engineering.  Fag is  British slang for cigarettes.  Basically it was sketches turned into metal and then modified according to Sir Lyons eye.   
No clay involved. 

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