Estes Black Brant XII, Kit # 9723 Build, Part 10, Cutting The Fin Slots

Mentioned earlier,

Check the fit of the fin slots with scrap balsa left over from the balsa sheets. Note the low fins are thicker than the 2nd stage fins.

The molded third stage fins fit into the highest slots. If the slots were cleanly cut, the fin tabs will almost snap into a tight fit.

The blow molded parts are cut apart and the ends cut off.

TIP: To be sure I was cutting on the correct lines, I drew a black line using a fine point Sharpie. Look close at the bottom of Page 3 and double check before cutting.

Square up the rough cuts with a block.

TIP: Round the edges for a smoother slide (less wear) in the body tubes.