In article , "Leon" wrote:

"Bill Noble" wrote in message
...


"Leon" wrote in message
...

"Bill Noble" wrote in message
...
acid activates purple heart and makes it a very vivid color - might be
worth a try

Vivid purple turned brown when turning and sanding a pen..... what kind
of acid are you using to bring back the pruple?

HCL


Hydracloric?

Right pronunciation, wrong spelling: hydrochloric (hydro[gen] + chlor[ine]).
Any swimming-pool supply shop will have it, but it may be pretty pricy. It's
also available in many hardware stores under the name "muriatic acid" -- same
stuff, but usually much cheaper than at a pool shop.