Automatically translated from German!
 

Q:

My paint marker stops writing after 5 minutes and spills. Why?

A:

"If you haven't worked a lot with paint markers yet, you often assume you could write with them like with a felt-tip pen or a ballpoint pen. However, this is not the case: paint markers have an ink tank which is closed by a valve to prevent drying out. This opens always only by light vertical pressure on the tip (="pumping"). This is the only way for the tip to absorb paint. Consequently, this has to be repeated more frequently if the tip is to be used for a longer period of time. By shaking regularly during application, you also prevent the valve from clogging with the pigments it contains. Otherwise these heavier pigments will sink downwards and block the valve from the inside.
0.8mm tips are basically quite filigree for a (relatively viscous) paint marker. When used on an unclean surface (e.g. slightly rusty metal), it can also happen that dirt is pressed into the valve with the tip by the pumping, with the result that the paint flow stops or stops. The stains you describe are usually the result of too much pressure (when writing) on the tip. The valve is then continuously open, the tip cannot absorb anything and the contents simply continue to run past the tip.
The excess lacquer around the tip that has escaped due to a valve that has been opened too long should then be removed before drying. If this has dried on and is then pressed back into the valve again by the pumping, it works similarly as the previous example with the rust. You can also carefully pull out the tip with a cloth for cleaning (there are also replacement tips available for replacement)".

Q:

Can I use the paint marker to repair chrome damage?

A:

"The Edding paint markers 780 and 751 or 750 can be used to repair minor damage to chrome parts. The paints are also heat-resistant up to 400 degrees if the repaired metal parts heat up. Please note that you should use the markers for an even surface in one go if possible".