How important is it to use exactly 22 layers for the landing gear hard points?
The important point is that the hard points be 1/4″ thick. The “22 layers” referenced in the plans is a guideline of how many layers it typically takes. You may use more or less depending on you layup technique and by how much weight you use to squeeze out the excess epoxy. Do not worry if your hard points are slightly thicker than 1/4″ (within reason). Add more layers if not thick enough. Note: some builders have avoided this step altogether by buying a scrap of 1/4″ G10 material from their local plastics supplier. Another option is to cut the landing gear bulkheads from the foam first, then use the scrap to make spacers to place around this layup. Make the layup a bit thicker than the plans call for (25-26 layers seems to work well) then add a sheet of plastic to the top of it, squeegee, and weight down with VERY heavy weights (60-80lbs works well). Make sure the weight is riding on the spacers after a few minutes, and the layup will come out precisely the same thickness as the foam.
