This post describes some technical and making aspects of the Light objects for the ANU School of Art library. You can read more about the design aspects here.
During the making of these lights a mix of manual and digital fabrication processes have been used. Brass and aluminium pieces have been laser cut while the translucent red elements had been rapid prototyped by ‘Rapid Pro‘ in Victoria, Australia.
The black curved arms are five 2.5mm layers aluminium, riveted together to create an inside channel concealing the cables up to the brass cylinder. They have been laser cut locally in Canberra by Acuform. The cylinder forms a central hub from which four conical carbon fiber tubes stretch out and support two light heads on each lamp. The lights have a wingspan of 1.4 meter.
Each light head has six one-watt LEDs. The LEDs are mounted on a decorative brass cooling plate (cut by Ponoko) and are cooled by a fan. The following parts had been used: LED ring with six one watt LED (LSP6-WW-XXX) and Controller/Driver (MDU9-SC-3570) from Future Electronics. All elements are enclosed by ABS housings. These housings are rapid-prototyped using translucent red FDM material from ‘Stratasys’.
The curved aluminium arm extent from the main brass fitting which is strapped onto the existing column with an aluminium strip. This strip has custom brass connectors to adjust the tension of the strapping.
The electronics – led drivers and fan power supplies – are placed inside the void between the column and the main brass fitting. The 12 volt fans are driven by 6 volt power-supplies letting them run without developing noise. Before the installation the lights had been tested for several days.