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Here are some tips on where to find the building materials specified in the PIK-28 plans.
The plywood specified in the plans is Finnish birch aircraft plywood of grade XX. Another type used is Okoume plywood. Okoume is a lightweight tropical hardwood available from sustainably managed sources. The plywood is used in thicknesses of 1 mm, 1.5 mm, 2 mm and 3 mm. The standard sheet size is approximately 1200 × 2400 mm. The required quantities are:
In addition, thicker plywood is required for the construction jigs.
Mahogany Oy Lohja, Finland. GradeGL I (The manufacturer's stamp is sufficient.)
The wooden strips are intended to be cut from Vendia Pro pine boatbuilding boards.
You will need boards 9 mm thick and 3000 mm long. The board width is less important, but you will need a total of xx strips, each 10 mm wide.
A 100 mm wide board will yield approximately 8 strips, so you will need xx boards in total.
Hempel Adhesives. HEMPEL's EPOXY ADHESIVE 05674 Epoxy adhesive, available from well-stocked marine supply stores.
SP 106
Aerodux 185, Hardener 151 Friebe Gmbh, Germany (web shop), Instructions for use
West system 105 glue, many sources
Epoxy thickening agents: milled glass fibres and colloidal silica. See the adhesive manufacturer's instructions.
Aircraft Spruce Europe - aircraftspruce.eu?
Aircraft Spruce and Speality, USA
Diatex, France
Lanitz-Prena Folien Factory GmbH, Germany
Cirrus Flyg Borås Sweden
www.sky-craft.co.uk UK
ulmtechnologie-shop.com, France