Estes Mini Bomarc Clone, Kit #TK-5, Part 4, Filling Nacelle Nose Cones

The small (BT-5 size) nacelle intake nose cones are difficult to fill. There are some inside angles that should be sharp and remain round.

On the left - the CWF has been brushed on.

On the right - the CWF has been sanded down and smoothed.

The secret? A good sanding block with 400 grit.

The sandpaper is only on the bottom surface, not rolled up on the sides. You can't sand into the corner of the intake cone at the top.

On the left - the nose cone balsa grain is filled. It a second round of CWF to build up the low areas.

Note the tubes seams have been filled with CWF and sanded.

 

I'd recommend filling all the balsa surfaces before gluing everything together.

It'll be difficult enough to get spray paint into the nooks and crannies.