[ARC5] Etching Crystals and WHINK Revisited - contact resistance.

[Kenneth G. Gordon]

On 4 Nov 2014 at 21:23, hwhall at compuserve.com wrote:

> 
> 
> >To accelerate Whink try putting a heat lamp over the solution or use
> a hot plate.  The acceleration of etch will be pronounced.
> 
> Didn't one of the much earlier messages on this thread state that HF acid
> evaporates at a fairly low temperature?

Yes. It evaporates at room temperature. Using a heat lamp over it, unless it 
was sealed in some sort of container, would make it evaporate much faster.

> If I recall that right, then take steps
> to control fumes.

Indeed.

Ken W7EKB