How to clean rust off a specimen Homepage › Forums › Fossil Prep Tips & Tricks Forum › How to clean rust off a specimen This topic has 0 replies, 1 voice, and was last updated 1 month, 1 week ago by John Browning. Viewing 1 post (of 1 total) Author Posts August 28, 2022 at 10:26 am #131926 John BrowningParticipant Found this Brachiopod in matrix. It’s covered in rust. Will Iron Out be good for cleaning this up or should I use another method? Thanks Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.