Soft dart tips don't really need "maintenance". Once soft tungsten dart tips are bended or broken just replace them.
Soft Dart Tips
If you are using "classic" steel dart then you don't have a choice for tips. The steel tip come with fixed tips that can't be replaced, or can only be replaced with workshop tools. However, there are steel tip with movable tips available. These steel dart tips are made for avoiding bounce-outs. These systems are quite good at that and usually reduce bounce-outs by 80 per cent or more.
Steel Dart Tips
Replaceable tip systems can be used on special steel dart tips from the movable tips manufacturer, or on normal and usually a lot cheaper soft dart tips (for possible compatibility problems see the barrels section).
Movable tip systems can be quite expensive. If you are a soft tipper and want to play or practice on a steel tip board on occasion and don't want to invest in movable tips then you can get cheaper "standard" replacement tips