Removing a signature from a poster (tested only on a sharpie fine tip and paint)
There aren't many times when you would want to remove a signature from a poster, but if you do have to you want to know what you're doing isn't going to muck up your poster! I have a 30"x40" Quad Star Wars original trilogy poster which has a black background, I wanted it to be signed by everyone in Gold pen, at Wales Comic Con 2013, I forgot to bring my gold pen, every start wars guest I met had one bar Kiran Shah, I didn't know this until I paid and he already had a silver pen and signing, I wasn't going to say no so gave it a chance and saw what it looked like! It was alright but i still wanted them all in gold, so went about removing it, the best way i'd heard was lighter fluid, i picked some up from a 99p store and gave it a shot and it works fine, takes a little time a patience but does the job!
by this point my wrist was aching a lot!