Electronics > PCB/EDA/CAD

DIY problems with an enormous 508mm board

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EEVblog:
The problem is that 508mm is larger than your usual 18" (457mm) panel size, so most manufacturers will charge a premium for it.
As with the A3, can you rotate the board diagonally to fit onto an 18" panel? If necessary, do this on your PCB file itself and define routing around the board (or cut it out yourself).

EEVblog:
http://project-pcb.com/
will let you enter 508x108mm, and it's $167 + postage for 1, $216 + postage for 5.

PCBcart are the same price and also accept that dimension

EEVblog:
Just for kicks I entered 5000mm into PCBcart and it still accepted it!
But their max dimension is 600x700mm
http://www.pcbcart.com/cart.php?page=capability___standard_pcb
So no problem.

Dave Turner:
For those trying tracing paper for the first time note that there are two sides to tracing paper one of which shinier than the other. This is the side that the design should be reverse printed on and laid face to face with the resist. This results in slightly less diffusion than any other combination thus giving a crisper edge to the traces.

Whilst I said reverse printed I guess that this is the norm for the printed output of the bottom layer from most PCB layout software.

BravoV:

--- Quote from: sleemanj on February 27, 2014, 08:18:12 am --- it's basically the same as the UV Soldermask ink, except they thin it with "banana oil", aka isoamyl acetate or amyl acetate.

Amyl acetate might be tricky to get, apparently ethyl acetate works the same and is the active component in acetone-free nail polish removers, so probably easier to come by [ bonus points for somebody who tries just using  ethyl acetate nail polish remover to dilute it and see if it works with the various contaminants ]. 

--- End quote ---

Aha .. Banana Oil, I think I saw it at our local industrial chemical store.  :-+

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