Homebrew PCBs

Very good point. Nylon doesn't like strong acids. It tends to crumble apart 
after some time, in week or so.

Ned Konz wrote:
> On Friday 07 March 2003 05:44 am, milwiron@... wrote:
> 
>>Hi Adam,
>>Thank you for the feedback. Thankfully the screws are common sizes,
>>I probably replace them with Delrin or nylon versions.
> 
> 
> Beware that nylon is attacked by HCl. I've had nylon zip ties fall 
> apart when used in a FeCl etch tank.
> 
> 
>>At 02:07 PM 03/07/2003 +1100, you wrote:
>>
>>>Yes it will, but probably not fast as Ferric Chloride. I once had
>>>a stainless teaspoon sitting in a beaker containing cupric
>>>chloride etching and it etched a good part of it away over a few
>>>days. When its long term you need good chemical resistant
>>>materials. Are you close by to any titanium screw suppliers? :)
>>>
>>>You could try coating the screw and its surrounding with a
>>>solvent based contact adhesive.
>>>
>>>milwiron@... wrote:
>>>
>>>>Hey All,
>>>>Does anybody know the effects of the cupric chloride etchant
>>>>solution on stainless steel?  I have a few stainless screws in
>>>>my etching tank that ammonium persulfate doesn't touch but I
>>>>know ferric chloride will slowly
>>>
>>eat.
>>
>>
>>>>Thanks,
>>>>Denny
>>>>
>>>>
>>>>Be sure to visit the group home and check for new Bookmarks and
>>>>files: http://groups.yahoo.com/group/Homebrew_PCBs
>>>>
>>>>To unsubscribe from this group, send an email to:
>>>>Homebrew_PCBs-unsubscribe@yahoogroups.com
>>>>
>>>>
>>>>
>>>>Your use of Yahoo! Groups is subject to
>>>>http://docs.yahoo.com/info/terms/
>>>
>>>Be sure to visit the group home and check for new Bookmarks and
>>>files: http://groups.yahoo.com/group/Homebrew_PCBs
>>>
>>>To unsubscribe from this group, send an email to:
>>>Homebrew_PCBs-unsubscribe@yahoogroups.com
>>>
>>>
>>>
>>>Your use of Yahoo! Groups is subject to
>>>http://docs.yahoo.com/info/terms/
>>
>>Be sure to visit the group home and check for new Bookmarks and
>>files: http://groups.yahoo.com/group/Homebrew_PCBs
>>
>>To unsubscribe from this group, send an email to:
>>Homebrew_PCBs-unsubscribe@yahoogroups.com
>>
>>
>>
>>Your use of Yahoo! Groups is subject to
>>http://docs.yahoo.com/info/terms/
> 
>