Purpose
- To protect a painted area of your model when spraying / hand-painting further colours
- To create a fine feathered edge to the demarcation line – ideal for military subjects
- To create a realistic demarcation line between different colours of camouflage patterns when you don’t have an airbrush or don’t feel too confident in spraying the pattern freehand?

Tools
Scissors – for cutting pieces of Blu-Tac putty and for getting into tight corners to trim it. Try to get hold of a small pair of pointed needlework scissors – great for this task
Materials

Blu-Tac Putty – this great product is a quick and effective material for masking camouflage patterns on military subjects – whatever the subject. It is putty designed for general home and office use to stick paper and other items to walls and just about anything?
You can also get white putty and other varieties but I find this one the best generally.
Success factors

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You get a very subtle feathered edge between the different colours with minimal or no ‘over-spray’ this is where the paint creeps under the masking medium and creates too much of a feather edge that looks unrealistic and over scale?.
Your spraying looks like it has been finely achieved using an airbrush – all very professional!
Watch out for…
Leaving your Blu-Tac on too long – this is easily done. We recommend removing it almost as soon as you’ve finished spraying – after about half an hour? If you don’t and especially if you’ve masked onto a matt (flat) surface, the oil in the putty can begin to impregnate the painted surface and leave an unsightly residue that is hard to lose. Just try to get into the habit of removing it carefully with tweezers soon after spraying.