As an end-user of a CNC machine, one will know that milling granite or marble is different than milling plastic or softwood. The CNC machine required in the former case needs to be more robust and with a high-frequency spindle. These machines are more expensive as they have more features and use better quality components for CNC routers. Before buying such machinery, it is significant to go for machinery which one has seen before. Also, it is essential to take a proper demonstration of the machinery. You can test it out on the material you are going to engrave in your business. That’s how you will be able to judge its capabilities.
3D engraving on marble plates
Engraving 3D sculptural techniques on stone marbles can be pretty impressive. In earlier days, sculptors did the work manually. Through their work of art that involves Stone carving & engraving, the skills of craftsmen were always appreciated when one saw walls adorned with marble plates, the delicate contours of angels figures milled on the marble plate.
However, despite the skills of manual sculpting, they couldn’t achieve the same work rate as a milling machine. Compared to other methods, a CNC RaptorX -SL milling machine will take only about four hours to complete a 3D stone engraving on a solid Carrara marble.
A CNC milling machine with CAD features processes the data of the CAD software. It ensures precision 3D lines where misalignment is only about 0.30 mm on a marble plate of 20mm thickness. Its high accuracy ensures that it removes only the necessary material for raising in 3D relief. The use of cooling spray helps to keep the milling machine safe from wearing. Also, using a vacuum to clean the dust and avoid health risks can give the user to stand beside the CNC milling machine without wearing a dust mask.
Engraving photos
CNC machines, apart from carrying out engravings on stones, do photo-engravings. Using GrantiGov, a professional engraving module, the machine uses a rotating diamond tool to grind the pictures with different grey shades. Using a contrast of light and dark grey tones, the engraved photos will come out well in contrast on flat dark surfaces. These types of engravings are suitable for tombstones, memorial stones, and headstones.
One does not need a CNC milling machine with high stability for grinding photos but requires high accuracy. However, for engraving words with V – carvings, some amount of stability is necessitated. A high Z router with ball screw spindles suffices for engraving photos. If one wants to mill deep into a rock and engrave pictures on the stone surface, using a GanitoGrav with RaptorX-SL CNC machine is a good choice.
Conclusion:
Demands on CNC milling machines are highest in stone machining apart from milling metals. When it comes to the deep milling of stones, marbles, and granites, it is evident that the machine’s construction should be solid and stable enough to avoid bending and damage to the components during the machining process.