Re: gEDA-user: homebrew UV photoplotter for direct exposing of photo-etch-resist on laminate

[Christoph Lechner <cl0023@xxxxxxx>]

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Dave McGuire wrote:
> On 6/21/10 4:55 PM, Christoph Lechner wrote:
>> Armin Faltl wrote:
>>> Thanks for the link, very interesting
>> Well, those people don't care about Laser safety, I guess ...
> 
>   Why do you say that?  Surely they were wearing goggles.  Anyone smart
> enough to build such a system is surely smart enough to wear goggles
> while operating it.
I'm sure that most folks showing of laser stuff on the Internet don't
care too much about laser safety. One point could be that laser googles
are costly. Or maybe they don't know.

> 
>> My method of choice is toner transfer.
> 
>   I'm seriously considering putting together a laser plotter
> specifically because I've never gotten good results with toner transfer. :-(
So, when do you consider a result as good? With toner transfer I do the
TQFP44 w/ 0.8mm pin spacing footprints of ATMega16 regularly. It just works.

But there's a big difference when you compare different printers, even
when made by the same vendor. For example Laserjet 4000 prints don't
work for me, so I do my toner transfer stuff with my Color Laserjet
4600. Both printers using original HP supplies.


- - cl
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