What is 3D Printing?
3D printing is way of creating a physical product from a 3D computer-generated design. It uses a very similar principle to desktop printing but instead of printing ink it prints plastic. The part is printed in layers, starting with the bottom layer and putting more and more layers on top of each other until the full part is produced. These layers of plastic might be just 0.2mm thick and therefore the part can be made up of hundreds of layers.
Why 3D Printing?
In our case, we mainly print with carbon fiber reinforced nylon. This material is lightweight, strong, chemical resistant, and heat resistant up to 160 degrees. This makes it the perfect choice for many automotive components. The material is only part of the story. The main reason for 3D printing parts is that you can have anything you want (within reason) and you are no longer limited to what companies are offering. Previously, custom parts were very expensive due to them being hand-made, CNC’d or for tooling to be produced. With 3D printing you can have an idea and produce a product within hours, for much less cost.
3D Printing Imperfections To Be Aware Of
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Z Seam
The Z seam is created when the printer stops one layer, moves up, and starts a new layer. This change creates an artifact that will be seen. Best efforts are made to reduce this or hide it where possible.
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Layer Lines
All 3D FDM printed parts will have layer lines. With a properly set-up printer, these are less obvious but when viewed close these will be seen. * FDM - Fused Deposition Modeling *
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Top Layer Finish
A good top layer is hard to achieve in 3D printing. The printer head moves back and forth across the part and although the lines are thin a pattern is often seen.