The Humbrol Model Filler 31ml is a fine grade model filler which can be sanded, filed and painted once dry.. Usage: Fills hairlaine cracks and gaps between plastic parts. The product can be sanded when fully dry using a fine grade of sandpaper and then painted. Substrate: Plastic models kits. Application: Directly onto substrate without excessive application of product. If gaps are deep, two thin coats are preferable to one thick coat. Drying Time: Surface dry in 1-2 hours. Fully dry in 24 hours. Drying times will vary according to ambient temperature and humidity. How to Clean: Excess filler should be wiped away with a damp cloth. Product is permanent once dry. Manufacturer: Humbrol Model: AE3016 Model Filler 31ml