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News

NEW RENTOOL

Greene Tweed & Co Benelux BV : 30 April, 2005  (Company News)
Designed to meet the demands of 21st century urban living in China, the Xin Lang was one of five innovative car designs that were selected as winners of the Michelin Design Challenge 2004 'Car for China', and exhibited to great acclaim at the Detroit Car Show earlier this year.
Xin Lang was designed by the young Slovenian car designer Uro Pavasović and made with RenToolTM tooling resins from Huntsman Advanced Materials, using a unique casting process known as 'Cliffhanger'.

Designed to produce oversize castings for automotive parts, the mould used for this process is 268cm long and 210cm wide and looks like a large needle bed. It consists of a large number of adjustable wooden stamps or pins, which are put into position via CAD data and can be adjusted either upwards or downwards, i.e. moulds can be either positive or negative.

The size of the mould allows for several full size parts to be cast simultaneously, such as a car roof, left-hand and right-hand doors and a front spoiler. Thus, the complete Xin Ling scale model could be cast in a single shot using this system.

The Xin Lang model was produced using CATIA data supplied by Uro Pavasović, which was then edited for process compatibility. From this data, a 1500 x 500x 450mm solid block was cast using RenTool 5150 resin. This block, weighing approximately 300kg, was then transported to Slovenia, where it was CNC machined to its final dimensions by Kovinoplastika Lo. Technical support for the project was provided by Huntsman Advanced Materials distributor in Slovenia, Adipos d.o.o. based in Ljubljana.

The model was then spray-coated twice after which a primer was applied. Finally the model was painted with metallic automotive paint, producing a high quality gloss finish, ideal for public display.

This unique RenTool Casting Technology system provides considerable time and cost savings for customers because it uses less material and produces a smooth surface, which needs little finishing. The mould production and mould set up are all CAD driven so customers can either enter their own data or RenShape solutions will execute data conversion as a service. And, of course, it saves customers the expense of capital investment in their own casting machinery and equipment.
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