EEVblog Electronics Community Forum

Electronics => Beginners => Topic started by: edmundopt on February 10, 2014, 02:30:43 am

Title: Lamp for working on photopolymer film
Post by: edmundopt on February 10, 2014, 02:30:43 am

 I have lots of non etched boards, I mean, the cooper is all there but they lack the UV resist. I bought Positive 20 spray and had very good results with it, but its winter now and I tried to spray some boards inside and it is ... messy!

Anyway, I have bougth this stuff :

[url]http://www.ebay.co.uk/itm/Photopolymer-Film-Photo-imageable-Dry-Film-Resist-for-etching-pcb-gravure-/261329310887?pt=UK_BOI_Electrical_Components_Supplies_ET&var=&hash=item3cd870d4a7]http://www.ebay.co.uk/itm/Photopolymer-Film-Photo-imageable-Dry-Film-Resist-for-etching-pcb-gravure-/261329310887?pt=UK_BOI_Electrical_Components_Supplies_ET&var=&hash=item3cd870d4a7]
[url]http://www.ebay.co.uk/itm/Photopolymer-Film-Photo-imageable-Dry-Film-Resist-for-etching-pcb-gravure-/261329310887?pt=UK_BOI_Electrical_Components_Supplies_ET&var=&hash=item3cd870d4a7 (http://[url=http://www.ebay.co.uk/itm/Photopolymer-Film-Photo-imageable-Dry-Film-Resist-for-etching-pcb-gravure-/261329310887?pt=UK_BOI_Electrical_Components_Supplies_ET&var=&hash=item3cd870d4a7)[/url]

To work with the positive 20 I use 4 white led lamps, the instructions on this one say "under yellow light or in shaded room", I suposed it's ok to use led lamps... Anyone with experience out there ?

Title: Re: Lamp for working on photopolymer film
Post by: sleemanj on February 10, 2014, 04:34:19 am

Dry film is not that sensitive.  Work under ordinary household lighting, close the curtains to keep out sunlight.  That's all.

See my tips:  http://sparks.gogo.co.nz/dry-film-tips.pdf (http://sparks.gogo.co.nz/dry-film-tips.pdf)