Diamond cut finishes to alloy wheels is growing more in popularity by the car manufacturers year on year. Easily recognised by its shiny mirror-polished appearance with fine machining lines being visible, more often in a two-tone effect, for example, black/polished, gunmetal polished etc.
The only professional way to do this is by using a CNC lathe and here at Wheels UK, we have the very best, by ‘Tryax’, Europe’s #1
To do this finish as a smart repair or touch up is impossible.
The process of diamond cutting is achieved by painting the entire wheel, then it’s off to the CNC where a probe digitizes the surface of the wheel to be cut, followed by a diamond-tipped cutter that removes a thin layer of metal from the face/lip of the wheel. This is followed by the application of an anti-corrosion treatment then finally a very durable powder coat clear lacquer.
Repairs to a Diamond cut wheels can be performed on average 1-2 times as only so much metal can be removed before a wheels strength is compromised and the appearance changes. Should the damage be too deep the wheel will need to be tig welded to achieve a better final result. (It could be possible some dotting or shading outline will be visible in areas where tig welding has been done, unavoidable unfortunately on occasions).
Points to note:
Low patterns: If the area of the wheel to be diamond cut (the ‘pattern’) is low or uneven, perhaps through deliberate design on the part of the wheel manufacturer or having been diamond cut previously then the centre cap and/or any badge details will usually sit proud from the wheel. This is an unavoidable consequence of a low pattern when performing a refurbishment.
Mapping lines: Sometimes a lightly coloured line, known as a ‘mapping line’, will be visible on the edge of the spokes on the face of the wheel after it has been diamond cut. This is a consequence of the diamond cutting process removing very small amounts of metal from the face of the wheel and exposing the underlying primer. Whether mapping lines will be present depends on the profile of the wheel and the number of times that the wheel has been diamond cut previously (which can accentuate the appearance of mapping lines). Our highly skilled technicians aim to minimise the extent of these mapping lines but we cannot be sure in advance how visible the mapping lines will appear on the finished wheel.
Wheels are inspected on arrival first checking for buckles or flat spots that would affect the cutting surface, should some be found, you will be informed of any additional charges.