PDP-8/a cleaning

[Paul Koning]

> On Apr 25, 2017, at 6:06 AM, Pete Turnbull via cctalk <cctalk at classiccmp.org> wrote:
> 
> On 25/04/2017 10:08, jim stephens via cctalk wrote:
>> 
>> On 4/25/2017 1:39 AM, Pete Turnbull via cctalk wrote:
>>> 
>>> "Little residue" would be more accurate, and some of that residue
>>> will be water (look up "azeotrope") - plus you need a lot of
>>> alcohol for something the size of a PDP-8 backplane.  Blow dry,
>>> even after an alcohol rinse.
> 
> I should perhaps have mentioned that the idea is to flush the remaining
> water or alcohol out by blowing, not evaporate it like your hairdresser
> would :-)  And you ought to use dry air, ideally - most compressors have water in their air.

Worse yet, a lot of compressors have oil in their air.  You can attached a dryer/filter to the compressor outlet to block that.  Compressors intended for air brush use tend to be set up that way, and/or use a mechanism that doesn't use oil (such as a diaphragm pump).

	paul