Estes Hi-Flier XL, #3226 Build, Part 13, Fin Primer Fill and Sand

The fins were stuck to a cardboard scrap for primer/filler spraying.
There are six fins here, I'm building two Hi Flier XL kits.

Spray one side, let dry.
Flip the fins over and spray the other side. Don't miss spraying the leading, outside and trailing edges.

Enlarge the picture and you can see the grain pores left after the CWF fill and sand. The primer/filler will fill the remaining grain after it is sanded.
Wet sanding could be a little iffy. I tend to remove most all of the gray primer/filler and the CWF filler underneath is still water soluble.

The bulk of the primer/filler is removed using some old Norton Premium 220 grit sandpaper. Newer 220 might make some deep scratches.
After 220 grit, 400 git follows removing most of the remaining filler/primer.



TIP: Here's that older piece of the Norton Premium 220 grit. On the left the sandpaper is loaded with grey primer/filler dust.
Here's more about the Norton Premium Sandpaper: CLICK HERE

Run the sandpaper under water and scrub out the dust with a soft brass wire brush.
On the right is the same piece of sandpaper, ready to go again.

After one side of one fin is sanded the paper is pretty well loaded up. Use the brush to clean it off and sand off the other side of the fin.
That one small piece of 220 grit was used on both sides of all six fins.