[sudo-discuss] laser PC board etching

[Cere Davis]

Here’s another data point:
http://cds.cern.ch/record/1214725/files/PH-EP-Tech-Note-2009-003.pdf

On Sun, Dec 3, 2017 at 2:44 PM, Cere Davis <ceremona at gmail.com> wrote:

> Well, if this is to be believed https://www.hindawi.
> com/journals/ijp/2009/150389.fig.002.jpg, I think the only real problem
> might just be a slightly less stright line, which could be compensated for
> in software.  Pretty sure the f-theta lens I have is made from PMMA.  It
> looks plasticish and most of the cheap lenses are made from this these days.
>
> Really informative reddit conversation on this: https://www.reddit.com/
> r/askscience/comments/3p88vp/how_is_plexiglass_pmma_made_to_be_uv_and_ir/
>
> Unfortunately, the f-theta lens that you get with it is optimized for
>> the near infrared wavelength the laser printers operate at and uses a
>> lot of energy when used with a 405nm laser. So direct mirror might
>> still be the best option (but I have never myself tried the f-theta
>> lenses in these equipments with 405nm, maybe it still is viable
>> enough?)
>>
>> I am currently experimenting with bending mirrors to get a cone mirror
>> ( https://github.com/hzeller/ldgraphy/blob/master/design.md#
>> cone-mirror-arc-exposure
>> ), but these experiments were not that successful yet (but this
>> project is only one of many, so things are slower than they could be).
>>
>> > I have a BB and all
>> > the other components are pretty easy to acquire.
>>
>> I am currently working on a cape for the pocket beagle for LDGraphy.
>> which will be nice and compact and also cheaper as the PocketBeagle is
>> only $25.
>> https://plus.google.com/u/0/+HennerZeller/posts/SnVTjc24AbJ
>> Goal here is to actually make double sided boards with two lasers from
>> two sides.
>>
>> Anyway, I will probably only have more time on this more later this
>> year or January to finish up things.
>>
>> -h
>>
>> > I’m not inclined to work on this alone, but if other people have a
>> burning
>> > need for something like this, then I would certainly like to
>> collaborate!
>> >
>> > -Cere
>> >
>> >
>> >
>> > On Sat, Dec 2, 2017 at 11:53 AM, Adam <me at adammunich.com> wrote:
>> >>
>> >> Wrong wavelength, resolution.
>> >>
>> >>
>> >> On Dec 2, 2017 11:04 AM, "Cere Davis" <ceremona at gmail.com> wrote:
>> >>>
>> >>> I mean cool, but why not just use a laser cutter on low power?
>> >>>
>> >>> ...emailing on the go...
>> >>> @ceremona
>> >>> http://ceredavis.com
>> >>>
>> >>> On Dec 1, 2017 5:23 PM, "Jake" <jake at spaz.org> wrote:
>> >>>>
>> >>>> Henner made an open-hardware system for UV curing photoresist, and it
>> >>>> works:
>> >>>>
>> >>>> https://github.com/hzeller/ldgraphy
>> >>>>
>> >>>> On Fri, 1 Dec 2017, Cere Davis wrote:
>> >>>>
>> >>>>> I mean if it could be UV laser cured with just a laser cutter on low
>> >>>>> power
>> >>>>> etch mode, that would be ideal.
>> >
>> >
>> >
>> >
>> > --
>> > Cere Davis
>> >
>> > Science-Art | Kinetic Sculpture
>> > CereDavis.com
>> > @ceremona
>>
>
>
>
> --
> *Cere Davis*
>
> Science-Art | Kinetic Sculpture
> CereDavis.com
> @ceremona <http://Twitter.com/Ceremona>
>



-- 
*Cere Davis*

Science-Art | Kinetic Sculpture
CereDavis.com
@ceremona <http://Twitter.com/Ceremona>
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