I just took off the claws from vinegar, ~ 22 hours later.
I scrubbed them with a toothbrush to remove the rust. It came off easily outside but, due to some very affected spots inside, I changed the vinegar and put them again. They will stay another day to ensure that all spots become clean.
Stay tunned.
[IMG]http://i1028.photobucket.com/albums/y341/joaojanina/Mobile%20Uploads/20160109_184443-480x853_zpsqss0zup4.jpg[/IMG]
[IMG]http://i1028.photobucket.com/albums/y341/joaojanina/Mobile%20Uploads/20160110_164250-800x450_zpsdgotiyqc.jpg[/IMG]
[IMG]http://i1028.photobucket.com/albums/y341/joaojanina/Mobile%20Uploads/20160110_165140-480x853_zpshxbl8gyl.jpg[/IMG]
Remember this rusty claw?[IMG]http://i1028.photobucket.com/albums/y341/joaojanina/Mobile%20Uploads/20160109_182152-800x450_zpsjijzknvh.jpg[/IMG]
After scrub it
[IMG]http://i1028.photobucket.com/albums/y341/joaojanina/Mobile%20Uploads/20160110_165241-480x853_zpsavldmqmy.jpg[/IMG]
Old vinegar vs new
[IMG]http://i1028.photobucket.com/albums/y341/joaojanina/Mobile%20Uploads/20160110_172544-800x450_zpspgtiarsg.jpg[/IMG]