SV: Laser vs. Schaeffer (Was: Re: [sdiy] Matrix FX BBD delay part update

[Grant Richter]

Anodizing needs to be dark to absorb the laser power, rather than  
reflect it.

You can actually get two different colors in aluminum. A CO2 laser  
will produce a grey burn, while an Eximer laser produces a white burn  
from the higher temperature instantly oxidizing the aluminum.

I did a set of 10 Borg Filter faceplates where the backgrounds were  
done with CO2 laser and the text was done with an Eximer laser. They  
came out quite nice. Very collectable now a days. You can tell them  
from silk screened ones because the vertical lines at the edges have  
gaps in them due to a mistake by the guy who programmed the laser.  
Yes, even with CNC lasers it is hard to get perfection.

On Sep 14, 2006, at 6:18 PM, Ken Stone wrote:

> The Laser is probably bleaching the dye here, so it may not work on  
> silver
> anodised or mill finish aluminium. Still, if you are doing black  
> panels, it
> sounds like a good alternative.
>
> Ken
>
>
>> Tim, the place  went to also had the stainless overlay material  
>> but they
>> etched my anodized frac panel with the same machine. The manager  
>> wasn't sure
>> if it would work so we tried a test burn on the backside 1st. It  
>> came out a
>> little fuzzy on the edges at 1st. He made some adjustments to the  
>> power and
>> got it perfect the next time. Here I searched the place up:
>>
>> http://www.signarama.com/store.locations/delaware.signs.asp
>>
>> It's the location in Newark shopping center.I recommend sending a  
>> scrap for
>> them to test on 1st so they can dial it in. The manager, I guess  
>> it's Gary,
>> was really helpful and pleasant to deal with. I haven't done  
>> business with
>> him since 2001 so he probably won't remember me.
>>
>> M. A. Ruberto
>>
>>
>>> From: "Tim Parkhurst" <tim.parkhurst at gmail.com>
>>> To: "Michael Ruberto" <frankentron at hotmail.com>
>>> CC: dalenkarl at yahoo.se, jhaible at debitel.net, synth- 
>>> diy at dropmix.xs4all.nl
>>> Subject: Re: SV: Laser vs. Schaeffer (Was: Re: [sdiy] Matrix FX  
>>> BBD delay
>>> part update
>>> Date: Thu, 14 Sep 2006 13:04:10 -0700
>>>
>>> On 9/14/06, Michael Ruberto <frankentron at hotmail.com> wrote:
>>>> Here in the states there are some sign makers that have a Laser  
>>>> etching
>>>> machine for creating custom plaques. I had one of these places  
>>>> etch a frac
>>>> rack panel for me from an EPS file I created in Freehand 10. The  
>>>> costs was
>>>> only $15 and the results were quite impressive. Try calling some  
>>>> sign
>>>> makers
>>>> you may get lucky.
>>>>
>>>> M. A. Ruberto
>>>>
>>>
>>> Hey Michael,
>>>
>>> I've talked to guys like this, and the one drawback to the laser
>>> etching equipment (or so I've been told), is that it doesn't work on
>>> aluminum. It works very well on stainless steel (hence all the laser
>>> engraved stainless steel goodies one sees at shopping malls these
>>> days), and many engravers have thin, self adhesive stainless  
>>> material
>>> that can be engraved and stuck on a panel. Still, have you had this
>>> done on aluminum? Was the aluminum raw, or anodized?
>>>
>>>
>>> Tim (raw, not anodized) Servo
>>> --
>>> "Imagination is more important than knowledge." - Albert Einstein
>>
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> ______________________________________________________________________ 
> _
> Ken Stone   sasami at hotkey.net.au
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