>Date: Mon, 02 Oct 1995 15:25:25
>To: IPC - TechNet
>From: Luke Mendoza <[log in to unmask]>
>Subject: Re: difficult soldering on OPC bare copper boards
>
>At 09:13 AM 8/25/95 DST, you wrote:
>>On Fri, 18 Aug 95 17:59:03 PST [log in to unmask] wrote:
>>>      We are having trouble soldering organic protective coated bare copper 
>>>      boards. The difficulty is occurring with manual iron soldering in the 
>>>      post wave/wash shop.
>>>      The boards soldered fine in SMT, and then they were washed. They then 
>>>      sat several weeks awaiting finalization of engineering changes and 
>...
>> 	 Allen: There are a couple of different approaches you can try.The   
>>         easiest is to try a stronger core solder.You don't specify the type 
>...
>
>One approach is to pre-tin the bare copper areas that you intend to
hand-solder later on. This would involve adding stencil openings
corresponding to the pads to be hand-soldered. This way, you would not have
to worry about copper oxidizing.
>
>-Luke-
>
--
Luke B. Mendoza
http://www.iphil.net/user/lmendoza/