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General Defects To Observe In Plastic Scale Models

Author: Andrew Anten
by Andrew Anten
Posted: Apr 27, 2020

General Defects To Observe In Plastic Scale Models

So you are planning to build one of the plastic model boat kits and you got one with a gazillion pieces and you would like this to appear good enough to put on the show on the mantle. Now, where do you begin? You must primarily take care of any sort of manufacturing flaws prior to starting to building the model. You’ll certainly come across different components once the kit is unboxed. These components – both small and large – are usually molded onto trees and in plastic bags.

1. Do not miss to inventory the kit keeping two intentions in mind:

a. Ensuring no component is missing, and

b. Scrutinizing the overall state of the kit

Make sure you verify very imperfection the components have, including flash, warpage, sink & swirl marks, pinholes, and mold lines.

2. Take care of any concerns from the initial step. If some additional components are required, get in touch with the manufacturer and look forward to delaying for delivery. The majority of manufacturers will help you manage missing component concerns. If you require correcting imperfections, do it initially prior you starting with model building.

Mold Lines

These are tiny raised lines on the pieces of hull and often run over raised portions or along sides of a mast. Some are more pronounced in contrast with others. The more recent plastic model boat kits have been enhanced and you’ll have a hard time discovering such flaws. You can effortlessly get rid of mold lines by using sanding sticks or fine sandpaper.


These are little round holes that are often noticed in the plastic, which is the resultant of the pins that push the part from the mold. Such marks are often eradicated in newer scale models or are usually in hidden spots. Make an effort to test fit the components to check if the pinhole can be concealed properly. If so, sand the surface smooth. Or, in case it’s deep enough, consider using body filler or putty to fill it appropriately, and then sand smooth once the filler is dry.

Sink Marks

The majority of depressions in the plastic surfaces such as decking are the results of plastic shrinking the time it is getting cooled down. These can be any form or shape and must be filled appropriately as well as block-sanded cautiously prior to spraying primer.


It is the most general imperfection on plastic components, particularly the ones that are manufactured on tools that are out of date now. These imperfections can be fixed without any difficulty. Simply cut it off by making use of a sharp hobby knife, and sand the rest using needle files, sanding stick, or sandpaper.


It takes places when hot plastic components are dropped into a box and bent under their own weight or weight of other components of model boat kits. You can simply warm the component by blowing hot air on it, and cautiously and slowly turn it into the right shape, then wait till plastic cools off completely. It must hold new shape prior you move forward to the next step.


It is essential to sort out flaws before you begin to work with scale models. Undergo this quick guide to explore some general defects that you need to be aware of regarding your plastic scale model.

About the Author:

I am a professional scale modeler and a hobbyist and have been working on model boat kits for the last 17 years. I can certainly help you find the best plastic scale model to meet your skill level and other particular requirements.

About the Author

He provides lessons on how to choose the best ship model kits or the a href= boat kits through his blogs and online videos.

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Author: Andrew Anten

Andrew Anten

Member since: Dec 16, 2015
Published articles: 20

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