No, all of my stuff is usually in one piece when i paint it (with the occasional exception of wings and accessories). I have used masking fluid before with mixed results, its good but it has its limits.
The absolute best stuff I've ever found is the yellow Tamiya masking tape. Its expensive as hell but its god tier stuff for small scale modeling. The Tamiya tape is super tacky so will give you a good adhesion but it won't mess up the paintwork underneath. I have never had any issues with paint bleeding with this tape. Normal masking tape isn't really suitable for airbrushing and the Tamiya is the best tape out there.
A good couple of tips I've picked up are: Only airbrush very thin layers on at a time and makes sure they are totally dry before the next. This will reduce the bleeding under the tape. You can always coat the model in a gloss varnish before masking to give the tape a really good surface to stick to and if any paint does bleed through it can be removed with a little bit of thinners. For getting into those tight corners just cover the entire area with tape then use a sharp knife to score the tape down the joints. Great for doing the bits where mane/tail meets body.
That is actually very helpful thank you. I saw a guy on youtube last night using silly putty and plastic wrap for masking too. I sculpt everything in one piece so I was hoping you were going to say that you don't sculpt in pieces!
I'll look for that masking tape and see where I can go from there