Homebrew PCBs

Leon Heller wrote:
> ----- Original Message ----- 
> From: "derekhawkins" <eldata@...>
> To: <Homebrew_PCBs@yahoogroups.com>
> Sent: Thursday, January 26, 2006 1:09 AM
> Subject: [Homebrew_PCBs] Re: 8 mil tracks with JetStar film
> 
> 
> 
>>>Printer is an Epson Photo 870. Setting was for Photo Quality
>>>Glossy Film. Ink was from a local computer supply company
>>
>>What about the durability of the artwork? How scratch resistant is it? 
>>I've seen cases where all seems to go well with ink and film combo but 
>>the artwork deteriorates rapidly with use. A coat of clear spray 
>>becomes necessary in such cases.
> 
> 
> I generally only make one or two boards, so it doesn't matter too much.
> 

All fine detailed printouts should be handled with care. I wear cotton 
gloves when I need to handle the film aggressively. A big problem is 
dust and particle contamination, especially when the film has some 
static charge. I take an unused very clean paint brush and prior to 
exposure I wipe down surfaces of the vacuum frame glass, photoresist, 
and photomask.

Adam