Classic Fundamentals...a tutorial...post your building techniques HERE!

Edited for detail and accuracy...

Making symmetrical wing tips...use center lines. Wing tips provide more than something to bump into taking your model in and out of the house.

I add centerlines on anything that needs to be straight including leading and trailing edges while building and sanding. The wing tips are rough cut AFTER a center line has been drawn using a fine line roller ball pen (my favorite). The tips are hollowed using a few x-acto gauges in a big honking red handle, silver handle, long blade, # 11 and black handled x-acto carving knife with curvy blade makes quick work of the rough shape and I gernerally attach the tip with yellow titebond applied to both sides to be glued. 80 grit to cut the shape followed by 180, 220 and 320 if you are crazy. Monokoting wing tips is easiest using a heat gun and NEVER touching an iron to the tip. You will need a buddy to assist.

The photo shows a couple of contour gudes...one is red plastic and one is wire or just create a cardboard template. What ever shpe you pick...make the opposite wing tip IDENTICAL!

Photo shows Sig Komet wing tip.

Rusty Dose
Team Futaba