[sudo-discuss] laser PC board etching

[Henner Zeller]

On 3 December 2017 at 13:24, Cere Davis <ceremona at gmail.com> wrote:
> Ah, right.  Edumcation…
>
> Henner, this is a pretty great, and thanks for the clear writeup of this
> work!
>
> I DO have a printer laser module (hexagon mirror along with it's f-theta
> lens in tact), so there, presumably, wouldn’t be much of a limit to how
> large of a surface area this thing could UV cure with.

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