Intersecting Laser Beams for Rapid Prototyping

Date: Tue Jul 07 1998 - 16:33:26 EEST

Bob Crangle wrote:

"Subject: Re: Constantly Changing Build Platform - amended

Norm, could interference patterns of two variable-energy beams fully and
richly color each energy-sensitive layer? Interesting concept. Perhaps the
right combination of a single such beam with the right material could, to some
extent, do the same thing.

Bob Crangle
Rose & Crangle, Ltd.
102 E. Lincoln Street
Lincoln, KS 67455-0285
785 524 3130 (fax - 3436)"

The original inventor of this form of rapid prototyping was issued three US
Patents in this technology area. The innoventor is Wyn K. Swainson who filed
his first patent in 1971!!! The patents granted to Wyn on this technology
area include

Chatham Research


If you would like a copy of the original patent sent to you in PDF format,
please reply and we will send you one by EMail.

For more information about the rp-ml, see

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