Author: Pereira3D
Date: 2017-05-15 12:17
I respectfully disagree that printing is far from CNC in regards to accuracy. Many printers in the lower price end can create parts accurate within 20 microns. That is about a 0.0005" difference from even the high-end CNC milling machines. Then, the higher-end printers can easily match the accuracy of CNC. In addition, since printing is an additive process (less unused material) and materials are rather inexpensive, production costs are notably lower.
Furthermore, you are only taking into account the FDM (fused deposition modeling) 3D printers. While this is the more common type, there are also SLA (Stereolithography) and SLS (selective laser sintering) printers, among others. Take SLA for example: These printers most commonly use resins to build each model, where each layer is built through a process called photopolymerization, and the end product has a smooth surface that can be cured with UV light. These resins are not like standard plastics by any means. For FDM prints with a textured surface, the parts take reamers and sanding very well for various materials I use.
Again, feel free to contact me about any questions. For a technology that is relatively in its infancy, I find that 3D printing has a place in manufacturing and will grow into an even more significant role through time.
Ryan Pereira
Pereira 3D Clarinet Services
www.Pereira3D.com
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The Clarinet BBoard
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