Greetings:
I would recommend the Vita Cal decal kit for making your own decals. The kit comes with everything you need and if you follow the directions you can produce some good looking decals.
My B-25 was done using one of these kits and the decals came out nice. I am currently working on another project and I am going to do decals in this kit again, just waiting for the weather to warm as I have no place to spray here inside.
Here is my B-25 I did using the Vita Cal decal kit.
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Some things I noticed:
-Follow the kit directions defintely!
-You will need to use white paper if your decal has any type of white in it as printers do not print white.
-Yellow can present some problems, especially if being placed on a dark surface. The yellow printer inks have sometimes doesn't show up to well in relation to a dark background, I painted in the yellow and white serial numbers due to this
-Defintely dullcoat over them. I still have not gotten to do this yet on my model but I am sure would hide the decals when I do.
These do work great. They worked for me like any other water slide decal. I thought they were pretty durable and worked well on my model.
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I also tried using sticky paper like Avery address labels and so on for making decals. This worked okay, but they do not stay on very well at all. It'd be good to practice with or to get a layout of the decals but not for the model unless you are going to glue them down and coat over them with dullcote a few times. This type of paper is think and leaves a pretty visible edge line.
Hope this helps
Corey