So last time I mentioned the fact that I was casting things in Plaster of Paris and coloring the plaster. At first, I did some research on the internet and a few options came up, including using weathering powders, Rit dye, tempera paint powder and cement pigments.
Now what you’ll notice about all these options is that they are powders. Some of them work and some don’t, or at least not very well.
I first saw how to color plaster for modeling purposes on this Youtube video, which I do recommend. He does a great job on all his videos.
His method is to combine weathering pigments with water and then “paint” the mold he’s using. The results looked pretty good in his video.
I tried to replicate his efforts, but after several failed attempts with weathering powders, I rewatched the video and realized that he was painting the pigment into the mold and also putting it into the plaster.
Now he does say it would take a lot of weathering pigment to color a lot of castings. When I got the method to work, it did not color the plaster completely, but did give it more of a tint.
Using more weathering powder is the way to intensify the color, but how much more is up to you. If you use powders like Vallejo (like I did) or AK, it could add up to a lot of money.
In any case, weathering powders can only color plaster so much. Next time, how using Rit Dye works.
I’ve been learning to cast plaster lately and I’ve learned a few things here and there, mostly how important it is to make a proper mold and the consistency of the plaster. I don’t use anything fancy, just regular Plaster of Paris. I use it because I can easily damage it and make rubble if necessary. Other types of casting materials are much harder and great for purposes such as wargaming, but I just use it for dioramas.
So to get to the point, why would you want to color plaster? Well, for one thing, if you have a plaster piece that gets chipped, that spot will stand out quite brightly among your terrain or diorama. Not good. This is worse if you are a wargamer and your terrain pices get a bright white ding to repair.
So what to do? I’ll tell you in the next post.
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