[Jewelry making - Article 00142] - Re: [Orchid] Etching high speed steel

[Martin Niemeijer]

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    Hello For etching stainless steels, and also HSS steel you need H2So4
    and HCl in rather high concentrations 

	Try this
	55% water add
	25% concentrated H2So4 and  20% concentrated HCl
	heating up increases the speed.
	neutralize in washing soda

    remember first water that acid Strong acids are not to be used by
    ignorant people. 

    And maybe for all you money saver try to etch you files. 

    use following Clean the file in a hot washing soda bath with a brush,
    or with an other way of decreasing. 

    Than put them in the following mixtuRe: 

	7 parts water
	3 parts sulphuric acid
	1 part Nitric acid.

    In a few minutes ready. Neutralize in washing soda again. 

success
Martin Niemeijer

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