Do you need to undercoat miniatures?
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The undercoat (or primer) is necessary because it will make your paint stick much better to the plastic and it will create a more even surface for you when you paint. I strongly recommend only painting on a miniature with undercoat.
What can I use as a mini primer?

Many miniature painters use gesso for priming miniatures and models. Liquitex Gray Gesso is my preferred gesso medium for priming larger models and terrain pieces. Not only is it inexpensive, it is resilient to scratches and stretches out as it dries on models, providing a very smooth and pleasant surface to work on.
Why do people undercoat miniatures?
So the reason why you should prime or spray your miniatures is to give the paint something to adhere to when you paint on it. If you do not, your miniature will look awful and the paint won’t stick to the miniature.
Do I need to prime my miniatures before painting?
You should prime your miniatures before painting them, because it makes everything easier. Priming miniatures before painting them is one of the best things a tabletop gamer can do.

Can you Prime Minis in the cold?
Priming models in cold can ruin the finish as i’ve found out the hard way. You should really try looking for a garage that you can prime in. usually, its warmer there which will help your primer adhere and dry properly. if this is not an option, prime your models outside and bring them in immediately.
Do you need to prime Warhammer miniatures?
You really need to prime. The plastic is very flexible and you need a prime layer that will adhere to the plastic – otherwise the paint will flake off.
Can I spray undercoat?
While spray undercoating comes in pressurized cans to make it easy for application, an even spread might be difficult to get if you do it on your own. You need professional applicators to have excellent results.
What happens if you don’t prime a miniature?
Painting without priming can lead to streaky results and more coats needed. Black priming is actually a shortcut, as small amounts of black left behind can look like shadows, or help bring out detail. Although you will need to paint white over black before applying red/yellow and other light colours.
What happens if you don’t prime your minis?
Without a primer, even the very best acrylic paint will chip and flake off in no time during handling, transportation, or even while you are painting the model! What is this? Here are some primers that I use to start my miniature painting work: Tamiya Fine Surface Primer.
Should I prime or undercoat my miniature?
Bottomline, always Prime or Undercoat your miniature if you want to achieve the best results.
How do climatic conditions affect the quality of my miniatures?
Points to bear in mind are that climatic conditions, such as ambient temperature and humidity can have a dramatic effect on your miniatures and the quality of an Priming or Undercoating using Spray Undercoat or Primer.
What color do you Paint Your miniatures?
I know of one Professional painter who uses an Airbrush and generally sprays his miniatures White (Skull white), from there any area’s he wants darker he undercoats a darker shade with Black Undercoat and a brush and he occassionally for mid-tones uses a lightish grey.
What is the difference between primer and undercoat?
Using the words “primer” and “undercoat” interchangeably can paint a picture of confusion. One basic rule of thumb to remember: An undercoat is always a primer, but a primer is not always an undercoat.