The sunburst sundial adorning the south-facing wall of Bridport's new
hospital is fixed to the brickwork using an invisible threaded fastening
system that was bonded in position when the sundial was made
When Redline Signs of Wells was called upon to construct Michael Harvey's
design for a 4m long sunburst sundial, which would eventually grace the
south-facing wall of a new hospital in Bridport, Dorset, there was really
only one choice of fixture open to them. When we need an invisible
fixing, particularly in glass reinforced plastic, says Redline's Leon
Roberts, we always turn to BigHead.
BigHead fasteners are used extensively by plastics fabricators requiring
strong, load-distributing anchorages. The head of each metal fixing is
perforated and when it is bonded into plastics, the material flows
through the holes and 'keys' it permanently in position. The method
avoids having to drill unsightly holes in otherwise blemish-free
surfaces, and avoids any additional finishing that conventional point
fixings would necessitate.