Painting small parts individually either by brush or airbrush can be a real pain. Here are a few ideas to hold small parts securely while painting.
The ammo boxes on the right have a solid base. A small hole was drilled through the bottom of each with a pin vise (which only takes a few seconds). A cocktail stick was then firmly pressed in the hole. Because the end of the cocktail stick is tapered the size of the hold does not need to be exact. Also the wooden stem of the cocktail stick grips really well.
The cocktail sticks can be held in place for airbrushing and drying by using blobs of Blu-Tak, clay, plastercine, or an upturned box with holes punched in it.
There are many uses for left over plastic sprues. The pieces of stowage on the right have a hollow bottom. An ‘L’ or ‘T’ shaped piece of left over sprue has been glued into the hollow. Either poly cement or cyano glue will work fine. When the item has been painted the spru can be cut off level with the bottom of the stowage.
The plastic sprues can then be stood up using the same method as described in method 1 above.
Jam jar lids are another resource with many uses. Small items can be attached to jam jar lids with small blobs of Blu-Tak or similar sticky blobs designed to hold posters on walls. They will be held firmly for spraying or brush painting.
Make sure that you choose a substance that is intended for temporary fixing. Take care that the blob does not squeeze out underneath the part and prevent part of bottom edge of the part from being painted.
It is advisable to remove the part as soon as possible because the longer it is left the more firmly the Blu-Tak will grip on to it.