Use with rim downwards for
bottom bee space or with the rim uppermost if top bee space is
required.
The holes shown are to suite the standard porter escape.
Porter Escape Holes gives
methods of cutting such holes. For normal use a single 33 mm central
hole proves to be adequate.
Note 1. 9 mm plywood is specified owing to it's greater rigidity
and freedom from warping. This durability outweighs the small cost
saving of using thinner material.
Note 2. 9 mm is specified for the thickness of the rim material but
commercial supplies are often of 8 mm thickness, using 8 mm is
unlikely to cause any problems.
Assemble using a waterproof PVA type glue and 16 mm pins or staples.
If you wish to use this item in a system that uses bottom bee space,
then add the Rim
Parts.
The version as drawn above is both simple and durable. If
petroleum jelly
is used on the rim and linseed oil is used on the main
panel the item will give many years of good service.
