Originally Posted by BrainTeased
if i do that will the solder re-stick as i've once sanded down my iron tip and now the solder wont stick on the tip.
also what roughness would you recommend me using for the sandpaper?
Never use sandpaper or any abrasive material to clean a tip. Most iron tips today are a copper core surrounded by iron then plated with nickel or chrome or both. Sanding could destroy or remove one of these layers. The best way to minimize your tip maintenance is to find a good quality solder.