CNC engraving technology has evolved in the last decade as computer-aided design and manufacturing embraced various industries. The advantage of minimum lead times has allowed faster production. It does not matter whether it is a prototype or repeat machining of design; the technology is available as the file is in the CNC computer’s memory. Stored files already have the calculation of the earlier tool path which allows machining a design again. Software programs that enhance design methods are available off the shelf. The programs are easier to learn.
The quality and speed of the engraving are relatable to both the software program and the build quality of the CNC router.
CNC Routers for Engraving
The engraving on solid wood and non-ferrous metals require that the build quality of the CNC Router is strong. Any basic type CNC Router uses 3-axis configuration which means that solid object on the Routing table provides stability during the engraving process. Among several manufacturers of CNC Routers Omnitech from China has created a niche in the manufacturing of affordable CNC Routers for engraving.
The OMNI 1325 model is the perfect engraving CNC Router; not only it is robust in build quality it is priced reasonably, making it affordable for production as well as interior designers.
The 3-axis control motor on the 1325 model is AC servo type. Construction is of robust build and heavy duty suitable for woodworking, channel letters, sign making, custom millwork, engraving, artistic sculpting among others. There are other models in the same range with Model OMNI 3030 ideal for hobbyists because of the working size of 300 mm x 300 mm. The OMNI 1224 has aworking size of 1200 mm x 2400 mm. With a decent 2,2 kW spindle at 24000 rpm, this router is a big seller for engraving large pieces.
Software Quality
The programs based on advanced vector algorithms with a simple interface allows editing so that modifications to the tool path is easily incorporated. Some advanced tools use mirroring and merging 3D relief which makes repeating symmetrical design modeling simple and easy. Other advanced engraving techniques use fade relief tool for creating shadow perspectives. Engraving is a form of sculpting. Smart engraving strategies utilize software programs for the engraving of text and irregular shapes.
The engraving process of incising a design on a hard surface was primarily used in the jewelry trade embellishing gold and silver vessels. The process graduated to printing plates where the intaglio etching method oncopper printing plates became the standard. It was after the introduction of computer numerical control that engraving by CNC machines became sought after for the ease and speed. Jewelers have the small 3030 model in their premises allowing them a high degree of personalization and the capability of engraving on awide variety of surfaces. These surfaces could be round as in rings, vessels, cups or flat surfaces. With software capable of translating picture half-tones to G-code the process of engraving images has become simpler and artistic.
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