Most 3D printers on the market utilize the standard 0.4 millimeter printing nozzle and use a default setting of 0.2 millimeter layer height. This combination follows a rule of thumb where your layer height is half the size of the nozzle you print with.
Of course, you can always experiment with flatter, wider nozzles versus skinnier and more-pointed nozzles, but Vision Miner recommends following this ratio if you are just starting out.
Moreover, you can go down from 0.2 millimeters to 0.1 or 0.05 on most machines. The trade-off with smaller nozzle diameters is between print resolution and printing time. For example, if you switch from a 0.2mm nozzle to a 0.1mm nozzle, you extrude half as much plastic and double your layer count, effectively doubling your print time, as well. However, you will end up with a part that comes out much more dimensionally accurate and aesthetically pleasing.
The balance between nozzle diameter and layer height comes down to both personal preference and project requirements. If you need a part fast and it does not matter how that part looks, then you can go with higher layer heights and a larger nozzle with little concern. But, if you need a part to fit accurate specifications as well as look detailed, you may consider going with thinner layer heights, assuming you have the time required.
With all this in mind, Vision Miner recommends sticking with a standard 0.4mm nozzle and 0.2mm layer height if you’re a beginner in 3D printing.
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