Vallejo has water based putty, which is much less obnoxious to work with, compared to some presumably toxic Tamiya putty stuff. The imo best Vallejo putty product, is not the putty found in the regular "paint bottles" (tends to be tricky to use, and the tip can dry), but product number '70.401'. This is the one that comes in a 20 ml tube and with a nice thinned tip applicator. Works great! This putty is best sanded with medium coarse sanding files, and then fine grade sanding files, else you'll spent too much time sanding if only using some kind of 'fine' grade sanding file.
I am currently doing this build. Here are the steps I am using to complete the build:1) Build the primary hull, secondary hull, and nacelles (except for the end caps and intercoolers). 2) Work on the seams and prime the sub-assemblies. 3) Airbrush the final paint scheme on each of the sub-assemblies. 4) Assemble the primary hull and nacelles to the secondary hull using a jig. I did not attach end caps and intercoolers to the nacelles yet so the nacelles can lie flat on the jig.5) Putty and sand the seams on the secondary hull where the primary hull and nacelle attach. Then airbrush the seams the final color to hide them.6) Clear coat the entire model and apply decals.For me this makes it easier to paint and work on the model without fear of hitting a nacelle and breaking it from the secondary hull (a notorious structural weakness).
psylow, not to say you can't ask questions, we here love questions, but there are several threads that may provide you with info for step by step.This thread is my own. I am not claiming to be the best, or the only, but it may give you some ideas and pit falls to avoid.Steve'sThis thread is the reason I joined Scifimodelaction -Crowe-tNo offense to any other builder, but this is probably the best thread ever on accurizing the 650 kit! Crowe-t didn't light it or anything, but everything else is spot on; and the results, IMHO, speak for themselves.You can use the search function and type in "1/650" in case you hadn't already figured that out. Many threads or examples of the finished models should pop up!Keep going! As this one was my first in decades and got me going again in the hobby, I have a special love for the kit and any thread building it!Steady as she goes, Mr. Sulu!Steve