This is a trick I learned for dealing with pitted metal miniatures. I think I picked this up from either a class with Jeremie Bonamant or with Lilly Troy. The idea is to fix something like this as quickly and easily as possible, what could be simpler than a wash?
First mix up a small bit of Milliput (I prefer the regular but the super fine works for this too). Add water to some small container (I typically use the plastic from a blister pack). Add the Milliput and work it into the water. This is not quite as easy as it sounds, you kind of use a mortar and pestle type motion to breakdown the Milliput into the water. I find the end of a paint brush to be quite handy for this. I recommend wearing gloves as Milliput is slightly toxic. If you feel the tips of your fingers tingling you forgot the gloves.
You are looking for a consistency about like cream. You want it to flow off the brush yet remain thick enough to be a filler and not drip down the side of your model. I just keep adding Milliput or water till I get the consistency I want. A little Milliput goes a long way!
Once I'm happy with the mixture I use an old craft brush and just paint it on to the surfaces that are rough or pitted. For the Madbob armor one coat was enough to reduce the roughness to an acceptable level. I restricted myself to just dealing, mostly, with the armor panels. If its a very pitted surface it might take two coats. It dries pretty fast when its painted on like this.
|The blob of Milliput that I mixed up. I used, maybe, a quarter of this. I should have had some bases sitting nearby to work on!|
|This is the Milliput wash. It flows but it doesn't drip.|