Re: [CAD_CAM_EDM_DRO] Laser for Carbon Panels

Hello Mario,

I'm not sure if a laser would cut carbon purely because it will often
snap under heat like you say. The concentration could easily be enough to
fracture the carbon in my opinion, it'd be a bit like heating glass in just
one spot. The beam from the laser will be 1mm in diameter _max_ but the
temperature when it hits the panel in that tiny spot would be well over a
thousand degrees centrigrade. Although I'm not a 100% sure laser aren't
used. I suppose with loads of gas being blown through the cut it would cool
it somewhat. When they make processors for PC's they use a photoresist and a
UV laser for acuracy (On silicon tough).

Like one of the posts just said maybe they're cut using a water jet. A
laser would make sense because obviously the bits will be being made in some
very big production runs. I've never actually found out how a water jet
compares to a laser in terms of speed.

An excellent question whichever way you look at it. Let me know what you
find out. I'd be interested to know as well.

John

----- Original Message -----
From: <MIADSGNS@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, April 01, 2001 7:43 PM
Subject: Re: [CAD_CAM_EDM_DRO] Laser for Carbon Panels


> Does anone know if a laser cutter will cut carbon (graphite) 1/16" -1/8"
> thick panels. I know carbon tends to snap with heat so I pressume that the
> intensity of the laser will cut through the panel with ease, but I could
be
> wrong. Cuting the panels with a CNC machine has shown a lot of wear and
tear
> on the cutters, I am looking for alternatives. What laser cutter,if anyone
> knows will do the job. Anyone know how the RC car chassis carbon,
> fiberglass plates are cut with precision?
>
> TIA
>
> Mario
>
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