Painting Fine Detail Plastic models can be tricky at first, since the print process for this material involves adding wax support, and then cleaning each model using a hot oil bath. This can leave slightly oily residue on the models that may prevent paint from adhering correctly.
Before post processing your models always inspect the quality. If you have any concerns about the quality of the model you have received, please get in touch with our Service team before you begin painting.
Cleaning the models
Small wax remainders can be cleaned using a toothpick or a cotton swab. The easiest way to de-grease the models is to submerge them into a mild solution of hot water and dish soap. The water temperature should be around 70ºC/158ºF. Let the parts soak for a couple of hours, the water may turn cloudy as wax and oil separate from your models - you can repeat this process without harming your parts if necessary. You can also use an ultrasonic cleaning machine, or dip the models in acetone for about 5 minutes - if you choose to try acetone, make sure to clean the model thoroughly when you're done soaking.
When the model is ready to paint, it will be uniformly white and should no longer feel greasy.
You can gently polish your model using fine grit sandpaper or toothpaste and a toothbrush. Be careful not to rub away any fine details.
General painting tips
It's highly recommended to use primer before you start painting your models. Ordinary model kit paints can be used, satin and matte paints are best . Mix the paint according to the kit instructions, then apply paint in thin layers, allowing each layer to dry completely before adding another. It's better to apply several thin layers of paint rather than one thick layer.
If you plan to use dark colors, it may be best to dilute them first.
If you have a model with hollow parts, you can paint the interior too. Keep in mind that this material is translucent, so any paint you add to interior parts may be outwardly visible. The final step for most model painters is to paint the fine details (lamps, bumpers, striping, license plates, etc).
This tutorial was made in collaboration with RailNScale. This is an an abridged version of their tutorial which can be found here.