.

Original Message:   Small correction on glass etching
Glass can be etched with hydrofluoric acid (HF), not hydrochloric. While both acids are very dangerous, hydrofluoric is EXTREMELY corrosive to organic matter such as human flesh and will cause horrid burns that may never heal. I had to use HF a few times in my career since it was the only way to etch some very inert plastics, and I was not happy about having to do the work.

Etching creams that contain sulfuric acid, sodium bifluoride, and ammonium bifluoride are sold and are "apparently safer". I would not go near this compound either, even with gloves that are rated for acids and a lot of other protective equipment. I'm sure glass etching can be done safely once the proper equipment is set up, but this has to be done with a lot of thoughtful preparation.

Fred, it must have been rather "thrilling" to see someone doing acid etching. Wondering why sand-blasting or tumbling wasn't used instead...

Copyright 2019
All rights reserved by Bead Collector Network and its users

BackPost Reply

 Name

  Register
 Password
 E-Mail  
 Subject  
  Private Reply   Make all replies private  


 Message

HTML tags allowed in message body.   Browser view     Display HTML as text.
 Link URL
 Link Title
 Image URL
 Attachment file (<256 kb)
 Attachment file (<256 kb)