sponge paint brush..... I can do that... thank you On 10/09/2016 12:46 AM, Harvey Altstadter hrconsult@... [Homebrew_PCBs] wrote: > > Rob, > > You could try the sponge type paint brushes. That would get you the > sponge effect, and still keep your fingers out of the soup. > > > On 10/8/2016 8:53 PM, Dennis Shelgren nojoeco@... > [Homebrew_PCBs] wrote: >> >> Yes, of course gloves and glasses are required when working with >> anything volatile. >> >> >> On Oct 8, 2016 8:52 PM, "Rob roomberg@... >> <mailto:roomberg@...> [Homebrew_PCBs]" >> <Homebrew_PCBs@yahoogroups.com >> <mailto:Homebrew_PCBs@yahoogroups.com>> wrote: >> >> I don't know about sponging hcl.... I'm not that brave. >> I always wear nitrile gloves and glasses but I try to keep >> distance between the wet work and me. >> >> >> On 10/08/2016 10:33 PM, Dennis Shelgren nojoeco@... >> <mailto:nojoeco@...> [Homebrew_PCBs] wrote: >>> >>> The hcl/peroxide mix has to be occaisionally "regenerated" by >>> having air put through it, like an aquarium bubbler/stone. If >>> it's completely activated with copper and fresh or regenerated, >>> you can actually etch with just a sponge it's that fast. >>> >>> >>> On Oct 8, 2016 6:33 PM, "Rob roomberg@... >>> <mailto:roomberg@...> [Homebrew_PCBs]" >>> <Homebrew_PCBs@yahoogroups.com >>> <mailto:Homebrew_PCBs@yahoogroups.com>> wrote: >>> >>> My bottle of muriactic acid is at least 10 years old. >>> I only use about a shot glass of the stuff each time I etch >>> boards. >>> I think thats about 50 ml.... so a 950ml bottle will etch 19 >>> batches...... >>> and a bottle costs $5 at the local hardware store...... >>> so I don't think I will be using ferric chloride ever again. >>> >>> >>> >>> On 10/08/2016 09:18 PM, soffee83@... >>> <mailto:soffee83@...> [Homebrew_PCBs] wrote: >>>> >>>> Rob, >>>> >>>> My guess is it's mainly for ferric chloride and stuff. That >>>> mix you and I are using seems to generate its own heat >>>> somehow, though I have heated it when it was acting weak. I >>>> still haven't figured out why mine got weak, but I'm >>>> guessing it's shelf life. >>>> >>>> Take Care >>>> >>>> ------------------------------------------------------------------------ >>>> >>> >> > >
Message
Re: [Homebrew_PCBs] Re: Heater for Etchant Bath
2016-10-09 by Rob