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-----Formulation of stencil etching chemical for surgical instruments
Q. Dear sir,
As we are making etching stencil which is working successfully in Sialkot Pakistan.As well as we are making etching chemical in which we are facing this problem that when we apply stamp it looks sharp and jet black and clean it with cleaner but after half an hour it becomes brown and get bold. Now we want the best solution from your side. If you have any better formulation regarding this please share with us.
Waiting for your reply.
Thanks
product designer - Sialkot, Pakistan
January 15, 2010
Hi, M. Please tell us what etching formulation you are using, so a reader can hopefully advise you how to tweak it for a more stable black color. Also, the cleaner may be damaging the blackness, so please tell us what cleaner you are using. Although I know little about etching myself, improvements hopefully can be suggested by a reader. Thanks!
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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January 22, 2010
Q. Dear sir
We are making a type of chemical in which we are using such type of things.
30 % : H2NO4
1 LTR :water
10 % :glycerine
5 % :Sodium bichromate
We know our methodology is wrong and it is just a tip which is working but not properly..
PROCESS : We are already told you that we are doing etching on surgical instruments. Definitely you've seen stamps on surgical instruments e.g. Scissors, tweezers, etc. We etch in 1 or 2 sec of 24 volt. The most famous chemical is SHELLING. It's called ELECTRO ETCHING in simple language.
CLEANER:
We make cleaner by mixing:
Soap
Shampoo
Kindly help us in finding /making better formulation.
Thanks
Sh. M. Imtiaz Imtiazproduct designer - Sialkot, Pakistan
May 27, 2011
Dear Sir,
I have already sent you mail of detailed chemical formulation of etching so that you may help us with a better formula but still are awaiting response. We are searching for better formula of it since 5 years. Kindly reply to us as soon as possible.
Waiting for your reply anxiously.
Thank you
product designer - Sialkot, Pakistan
I hope that you meant 30% H2SO4 and not H2NO4 (which I have never heard of) or you are making a low grade nitroglycerine.
James Watts- Navarre, Florida
May 27, 2011
Try searching at Monode.com
Justin F. [last name deleted for privacy by Editor]- Smithfield, Utah, USA
June 2, 2011
I work with H2NO4 every day and believe the poster is wrong about what she is using. H2NO4 is nitric acid; the form she has given, when subjected to 24 volt at almost any amperage would explode violently.
kit haynes- coos bay, oregon
September 16, 2012
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