Homebrew PCBs

On 24/12/13 09:19, James Sleeman wrote:
> Russell Shaw wrote:
>>
>> It is commonly 100 or 110degC.
>
> Interesting, I guess that's for a laminator, which will mean the film
> and board itself must be a lot cooler without prolonged contact with the
> heating device.
>
> As mentioned, I'm using a clothes iron, if I took it to 100 degrees the
> film would be useless.  The iron is at best hitting 60 degrees when it
> is heating.  I can quite comfortably hold my hand to the hotplate.
>
> The dry film is the usual no-name blue stuff.

<http://www2.dupont.com/Imaging_Materials/en_US/products/dryfilmPhotoresist/etchmaster.html>


This one says the laminator temperature should be 110 +/- 5degC:

<http://www2.dupont.com/Imaging_Materials/en_US/assets/downloads/datasheets/em213.pdf>

If you iron the pcb a few times, there will be more heat-soak and hence 
temperature build up in the pcb compared to a single pass through a laminator.