15-07-2015, 07:43 AM
Just a little update.
The UV lacquer I bought has worked really well. Sprayed the PCBs on a dead level surface - five or six passes to give a good layer of lacquer, sprayed in the garage where the dust is minimal, then covered the boards with a plastic container to exclude dust and light. Exposure time not critical - I used 8 minutes to make sure they were fully exposed. A pic of an etched board is attached, alongside a built board. I prefer to spray my own boards rather than to use pre-sensitised board, because apart from the cost advantage, if there are any hitches in exposure or development, the lacquer can be cleaned off with meths and re-sprayed. Too often in the past, when using pre-sensitised boards, I've ended up with just a piece of PCB, and even when successful, lots of useless sized offcuts.
Just need to box it up and finish it off now!
Hope that's of interest to someone.
The UV lacquer I bought has worked really well. Sprayed the PCBs on a dead level surface - five or six passes to give a good layer of lacquer, sprayed in the garage where the dust is minimal, then covered the boards with a plastic container to exclude dust and light. Exposure time not critical - I used 8 minutes to make sure they were fully exposed. A pic of an etched board is attached, alongside a built board. I prefer to spray my own boards rather than to use pre-sensitised board, because apart from the cost advantage, if there are any hitches in exposure or development, the lacquer can be cleaned off with meths and re-sprayed. Too often in the past, when using pre-sensitised boards, I've ended up with just a piece of PCB, and even when successful, lots of useless sized offcuts.
Just need to box it up and finish it off now!
Hope that's of interest to someone.
Regards, David.
BVWS Member.
G-QRP Club Member 1339.
'I'm in my own little world, but I'm happy, and they know me here'
BVWS Member.
G-QRP Club Member 1339.
'I'm in my own little world, but I'm happy, and they know me here'
