Postby Timothy Huff » March 10th, 2019, 9:25 pm
An airbrush would give you a lot more control than spray cans. I use a cheap one from Amazon, think I got two and a compressor for £100 or so which does just fine. You probably would want to go for an airbrush with a top paint reservoir, as the under-mounted jars are a fiddle, especially if painting a larger area.
Personally, using an airbrush, I'd approach the softening of lines a different way: Mark the areas, and paint with the lightest colour, then paint with the darker, using a high PSI setting on the airbrush. When ready to soften the border between the two, do so with the darker paint, and a much much lower PSI setting. This will result in a lot less paint being delivered and softening of the lines is easily achieved with a few minutes practice.
You can spend the earth on airbrushes, but it's not really necessary, and indeed I'd not advise it ab initio. Cleanliness of the equipment is absolutely essential with airbrushes. I strip and clean mine before and after every session. When you strip it, do so on a surface where dropped parts are easily seen, and recovered - I do mine in an old black plastic "ping-meal" tray, as there's a profusion of small parts and springs that will fly off never-to-be-seen again if you give them half a chance! An old toothbrush, some proper airbrush cleaning brushes, some fine grade wire-wool, plenty of good quality airbrush thinners and some paper towels are all you need, plus some you-tubing to learn the basics, prefereably practicing techniques off-model until you have it down pat.
Hope this helps.