about the cores themselves
We cast most cores hollow. This makes the larger cores
lighter to handle, uses less material (another saving to
you!) and makes them quicker to wash-away. The core material
itself is virtually non-pourous, thus enabling parts that
are hollow to be bagged to the open end, rather than 'envelope'
bagging. This enables large cores, with relatively thin
walls, to be autoclaved, as the only actual pressure on
the core and laminate will be vacuum presure from the bagging.
Cores can be round, oval, square etc in cross section.
We can cast them with metal bushes or inserts cast into
the core to enable reinforcement to be attached during the
lay-up process so that the finished part is locally strenghtened,
again without the need for bonding as a secondary operation.
We can cast small intricate pipes for engine oil feeds
etc, or larger diameter pipes for aircraft type ducting.
Although designed and primarily used for aircraft ducting,
over the years our customers have come up with many innovative
uses for our cores. The following
page will give you some idea of the uses our cores have
been put through over the years.