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Posts: 63
Reply with quote  #16 
Another thing to be careful of is the flux you choose to use, NEVER use soldering paste sold in the plumbing section of hardware stores unless you damn sure it's safe to use on boards! Most of these contain Zinc Chloride flux, it is corrosive and conductive and it will continue to keep corroding. It's used in soldering copper pipes for plumbing, definitely not something you ever want to use on boards!

Zinc chloride - Wikipedia, the free encyclopedia
As a metallurgical flux
Zinc chloride has the ability to react with metal oxides (MO) to give derivatives of the formula MZnOCl2.[32] This reaction is relevant to the utility of ZnCl2 solution as a flux for soldering — it dissolves oxide coatings exposing the clean metal surface.[32] Fluxes with ZnCl2 as an active ingredient are sometimes called "tinner's fluid". Typically this flux was prepared by dissolving zinc foil in dilute hydrochloric aciduntil the liquid ceased to evolve hydrogen; for this reason, such flux was once known as "killed spirits". Because of its corrosive nature, this flux is not suitable for situations where any residue cannot be cleaned away, such as electronic work.


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Posts: 2
Reply with quote  #17 
Originally Posted by VapingBad

I couldn't find any "electronic grade" RTV is Sugru (Silicon putty) OK?

I built this DNA40 350 days ago and it has heavy use with no problems, the Sugru is the black stuff in the photo.

6 inside.jpg

Edit: I found some Servisol Silicone Adhesive Sealant which seems to be OK, but would like to know about Sugru's suitability.

That's a damn fine looking piece of custom work there my man.  Well done.

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Posts: 2,449
Reply with quote  #18 
Thanks Cactus
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •

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