[ARC5] WHINK and crystals.

[J. Forster]

I think it's used in glass etching. If so, Michaels or Hobby Lobby??

-John

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> On 26 Jun 2013 at 21:08, Dennis Monticelli wrote:
>
>> Now I use Ammonium Biflouride crystals that I dissolve
>> in water (in a small plastic bottle) as needed for a job.
>
> Where do you buy the Ammonium Biflouride crystals, Dennis?
>
> Ken W7EKB
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