On 24/12/2018 18:53, Bald Eagle wrote:
> StephenS <nom### [at] nomailcom> wrote:
> 
>> I have about 30 pieces now, half modeled. The gears came out rough and
>> often catch, more filing needed.
>>
>> Comments welcome:
> 
> Nice!  :)
> 
> Have you thought about motor-driving them and lapping them with abrasive to
> automate the smoothing?
> 

I was going to say that as a joke.

> 
> Just put some grinding paste on it and run it until it stops squeeling. ;)
> 
> 



> They also use a grease with particulate copper in it for Glocks and other such
> items - perhaps a quick electroplating or just dumping the iron parts into a
> copper sulfate solution (bluestone)

Copper sulfate crystals. Ah!

> to do a non-galvanic plating via a surface
> redox reaction would give you slightly copper-plated gears which might run more
> smoothly...   or not.  ;)
> 

Or you could varnish areas beforehand and have an image as an effect.




-- 

Regards
     Stephen

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