Posted by Canderim Onder on May 20, 2008 at 08:53:52:
In Reply to: Re: Flowlines in Aluminum Forging posted by TVP on May 07, 2008 at 16:56:25:
Thanks for help. I have used Tucker's Etch (HCl + HNO3 + HF + H20) and the result was great! flowlines have been revealed clearly.
Keep in mind that the reaction is exhotermic, and HF is an excruciating acid.