How to use putty

March 26, 2014 at 12:49 | Posted in How-to | 2 Comments
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Putty is one of the most useful things you can have, especially if you’re modifying or customizing your Gunpla. Basically there’s three types of commonly used putty: basic, polyester and epoxy putty. Each has different properties and applications.

Basic putty

Basic putty like this one by Tamiya comes in a toothpaste-like tube and is grey in color. This is the softest and most malleable of the three types of putty.

basic-putty

How to use: Squeeze out a little bit on a mixing tray. Add a few drops of thinner (for laquer-based paints) and mix. Use a toothpick or equivalent tool to apply the putty to the desired spot. Because it tends to sink in as it dries, I usually apply a lot more putty than what appears necessary. After it dries, file/sand/scrape away the excess putty.

Good for: Filling up small and shallow gaps and imperfections e.g seam lines or scratch marks. Can also be used to create a rough surface.

Not good for: Filling large gaps

Polyester putty

Polyester putty comes in two tubes. The bigger one is the actual putty, the smaller tube contains the hardening agent. In terms of consistency, it’s intermediate between basic and epoxy putty.

poly-putty

How to use: Squeeze out the putty (bigger tube) onto a mixing tray. Squeeze out a similar LENGTH of the hardening agent (smaller tube). Mix both of them together with a toothpick until the color starts to even out (same color with the putty tube cap). While it’s still in a paste-like consistency, apply to your Gunpla. A word of caution: you only have 5-10 minutes of working time, before it starts to harden.

After applying the putty, leave it at least 1 hour (I like to leave it overnight). Shape to desired form using hobby blade.

Good for: Filling up big gaps and forming shapes. They’re quite easy to cut and shape using a hobby blade

Not good for: Binding parts together. Also the hardening agent stinks a bit

Epoxy putty

To me, epoxy putty is like the duct-tape of Gunpla. It comes in two separate strips of brown and white, plasticine-like material.

epoxy-putty

How to use: Take equal amounts of the brown and white parts and mix them together with your hands, just like plasticine. They can be a bit sticky, so maybe using gloves is a good idea. When the two parts are homogenous, apply it to your Gunpla. I usually push them into gaps using a toothpick. After it hardens, trim or shape using a hobby blade. It’s a lot harder than polyester putty, but still manageable.

Good for: Filling large gaps, forming shapes, and binding pieces together. Also odorless

Not good for: Filling fine or shallow gaps. Even after filling large gaps, there may be very small air pockets in the putty. In this case you need to cover those with basic putty.

And there you have it. Needless to say, if you use any of these putties, priming and painting is necessary.

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2 Comments »

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  1. Nice guide! I have never tried using putty before, maybe its time I try it out. :)

    • have fun experimenting


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