Thinning the radiator cowling flaps is one of the many "little" things that need to be done. These kinds of tasks are usually done in-between the bigger jobs.
Time to sculpt the gun cowling! My first step is to use White Milliput to fill in the exaggerated valleys found on the kit cowling. Using a water-moistened fingertip, I can shape the valleys and blend in the putty to the approximate shape. I have both the Eagle Editions and Quickboost cowlings to use as models. All three cowlings (the kit, Eagle and QB) are different and this modified kit cowling will be different still since it is hand-shaped without any exact measurements.
After the Milliput has cured overnight, I refine the shape with sandpaper. It's difficult to gauge the work due to the contrast between the white putty and grey plastic. Mr Surfacer 1000 is used to blend any rough edges and fill small imperfections. Apply putty... sand... repeat... this process is iterated a few times to ensure a smooth surface. There were many subtle variations in the D-9 gun cowling, which Jerry Crandall's two volume reference documents thoroughly. Red 1 had a late 3-piece gun cowling with no bumps or flares. The kit cowling represents an early 5-piece gun cowling with semi-circular flares along the bottom edge of the cowling between the two fasteners. The extra panel lines are filled in with Mr Surfacer and the flares are sliced off.
When I get to the point where the cowling looks good to my eye, I have to verify the work with primer.
I spray the rear half of the cowling with Mr Surfacer 1200 thinned with Tamiya Lacquer Thinner (my preferred primer).
Comparing the modified cowling with the Eagle and Quickboost versions, I notice a few things to correct: a slight indentation along the left gun bulge and the valley between the two bulges is a little flat and needs to be hollowed out more. The hole for the starter crank will be added after the shaping is complete as will the lost panel lines.
Comparison with the un-modified kit cowling shows the reduction of the "cleavage" as well as the removed panel line and flare. I've added a bit of Mr Surfacer 1000 to the indentation and I'll do (hopefully) the final shaping of the gun cowling tomorrow.
