I will use my Nifty as the example...for one method
Cutting cant be easier all straight lines for the wing layers.. I decided to put the top and bottom KF steps at 45%, again keeping it simple..
Main/centre layer 32 x 16.. 1 off
outer layers 32 x 7 1/4.. 2 off
Spars Balsa 1/4x3/4 x 32.. 2 off
Laminating.
marking up..
Put a line 1.5" from the front on both sides of the main panel and one side of each of the 2 layers/steps. this is where you will spread the uhu to laminate the layers together to form the leading edge...
On the two layers/steps also put a line 3/4 from the rear edge.. this is where the spar will be stuck
On the main panel put a line across at the rear of the step position..put another line 3/4 in front of that one..repeat on the other side.
Gluing
one side at a time...spread UHU por along the LE and the spar positions on the main panel..
Spread uhu along one surface of one spar.
Spread uhu along one of the layers at LE and spar positions.
the first fix - the spar
By now the spar coating and the main layer coatings will be dry, so on a flat surface push the spar in position, then rub it down hard to fix it.
more glue
Spread uhu on the top of the spar and wait for it to dry.
the second fix - layer 1, the top
The top layer can now be fixed...with care position the layer first onto the spar, and rub down hard, it is important the layer must be fixed firmly to the spar and not be able to pull away...now starting from the centre push the LE
...Continue Reading