If the cap of a paint tube breaks or cracks, you need to reseal the tube so the paint doesn't dry out. I've fortunately only had it happen a few times. I fold up a small piece of plastic wrap (clingfilm) into several layers, then put this over the top of the tube instead of the cap, and keep it in place with a small elastic band.
Tip from: Marion Boddy-Evans.
With oils you don't have to put the cap back on until you are done painting for the day. So try this: when you are done painting for the day light a candle. When there is enough melted wax in the candle's top, dip the end of the paint tube in the melted wax. This should form a seal around the tip. Peel it off when you are ready to use them again.
Tip from: John Najarian
If the cap of your paint cracks or breaks clingfilm works great to seal the moisture in nicely.
Tip from: PT
If a paint tube cap cracks in two just above the thread, I take a wide elastic band and keep the top of the cap in place by stretching this over the top of the cap and around the bottom of the tube.
Tip from: Agatha
Next time you finish a tube of paint, clean the cap and then store it for possible use as a replacement in the future.
Tip from Alex Gowes
I've lost or cracked the screw rims of the several tube tops; I've found the acrylic content will soften up when inverted in a glass of water, sometimes for days.
Tip from: Robin Smith
