On my first scratchbuilt model I used the green version, can't quite say how the result was when it came to sanding. Didn't have a clue what I was doing, so the result was a rather wobly hull. The Milliput hadn't cured too well and I decided to switch to the Super Fine at that point. It's quite possible that the rougher green version is sufficient for sanding a model if it's cured well...
The white one is pretty good, sanding goes fast. I do still get some improperly cured spots from time to time. For a model of this size, you only need a very tiny amount of filler, so mixing it at proper proportions isn't too easy. As you can see in the last pic below, one part of the starboard bow hadn't cured well. I cut those out to a hard edge and refill them afterwards.
The starboard side of the accomodation is in place in the pictures, but I'm building at break-neck speed (to my standards anyway
), so I'm building before thinking
. I forgot to integrate the side of the funnel which is located adjacent to the accomodation, so I'll be doing this part again. It does give a good template to match the bulwark. The initial template was made of paper of course.
The bulwark is a bit strange, it arches in a wee bit forward and slowly coming to full vertical on the side to join with the rest of the accomodation block.
The whole forward mooring deck is covered, but to give daylight (Maritime Labour Convention requirement) to the forward cabins, there is a gap in that cover. That's the main reason for painting the deck green and detailing the forward bulkhead of the accomodation.
Stern section, I need to have the first fill in place and paint the inside of the aft gallery before I could place the transom. I currently plan to keep the hull as one piece during the next layer of filler to make the stern match nicely. Then I'll need to cut out the 1mm waterline somehow.