This effect is created by painting coats too quickly, and not allowing adequate drying time. It can also be caused by extremes of temperature while the paint is drying Tools and materials Chemical stripper or a hot-air gun, scraper, sandpaper

This problem requires stripping, sanding and repainting in order to get the desired finish. Strip paint completely using chemical stripper or a hot-air gun. Sand down the area and repaint.

Extracted from DIY- Know How With Show How published by Dorling Kindersley, price £25.00. Copyright © 2006 Dorling Kindersley Ltd, Text copyright © 2006 Julian Cassell and Peter Parham