Working thick model filler into confined spaces or around delicate details with a typical spreader tool can often prove tricky. Instead, we can create a thinner filler paste that can be applied by brush with greater precision. Combining liquid poly cement and styrenebased fillers (such as those offered by Humbrol, Revell, Tamiya and Squadron) allows us to tailor the consistency to suit the job at hand. Furthermore, the need for sanding later can be reduced as the filler paste is applied in a more controlled, neater manner. Ensure an overnight rest for the paste to cure fully before sanding.
The thin putty paste can be brushed into awkward areas, especially wagon interiors or around delicate details. Deeper recesses may need a couple of separate layers of putty, applied when the previous application has dried.
Squeeze out a blob of model filler onto a scrap of card and, after dipping a brush in liquid poly cement, mix the putty until the required consistency is achieved. Add more liquid poly to thin the putty further as desired.
The putty can be manipulated with a clean brush, dipped in the liquid poly cement and drawn carefully over the putty before it has cured. Beware – the surface of the plastic will be softened by the solvent.