Homebrew PCBs

On Mon, 20 Feb 2012 22:41:09 -0500, you wrote:

>I am considering making a vacuum frame to use for the UV exposure method.
>Has anyone made or own a vacuum frame that they can share their thoughts on?
>I am unable to find any pictures or information of PCB frames made by others
>for our purposes.  Does anyone have any suggestions for materials like
>plastic covering (dry cleaner bags UV transparent?) or the porous material
>for allowing the vacuum to flow under the board?
>

I made a crude but workable frame from MDF, the painted kind.  Drilled
holes in it, ran a shop vac to it, and used vinyl from a fabric store
as the cover for the board.  Seemed to work just fine.  The extended
sides supported the lamps.

Harvey

> 
>
>Jeff
>
> 
>
>  _____  
>
>From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
>On Behalf Of leeleduc
>Sent: Sunday, February 19, 2012 6:23 PM
>To: Homebrew_PCBs@yahoogroups.com
>Subject: [Homebrew_PCBs] Re: Printer and Pulsar Paper
>
> 
>
>  
>
>
>
>I'm using a Samsung ML-2525. Works well, just have to make sure you have it
>set to the darkest settings. I've dedicated this printer for PCB's in the
>lab. 
>
>Have a look at
>http://www.pcbfx.com/main_site/pages/start_here/printer_info.html
>
>Also, drop Frank an e-mail at mail@...
><mailto:mail%40pulsarprofx.com> . He's very good at helping people use his
>product.
>
>Regards,
>Lee
>
>--- In Homebrew_PCBs@yahoogroups.com
><mailto:Homebrew_PCBs%40yahoogroups.com> , "storan4wd" <bob.balderson@...>
>wrote:
>>
>> > I saw some one used a samsung laser 1200x1200 dpi with reg.
>> > photo paper. 
>> 
>> Hi Mark,
>> 
>> I am that someone! Just for interest, I tried using that Samsung ML-1860
>laser to print a small piece of Pulsar paper stuck to a regular paper
>carrier. It was very good indeed - once I remembered to set the paper to
>"thick".
>> 
>> I didn't proceed any further but I could see that it ought to give good
>results to about 10mil.
>> 
>> It impressed me enough to think about using my old stock of Pulsar paper
>to make iron on silk screens.
>> 
>> Regards,
>> 
>> Bob
>>
>
>
>
>
>
>[Non-text portions of this message have been removed]
>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>