Richard Horne

Unlike traditional manufacturing, which involves injecting material into a pre-formed mold or removing material from base material objects, 3D printing starts with a virtual 3D model that is transformed into solid form one layer at a time. Each layer is built on top of the layer before, creating a solid form representing the virtual 3D model in all of its complexity and detail without requiring additional forms of machining and treatment necessary in traditional forms of manufacturing.

When your 3D printer's hot-end gets blocked or your extruder's filament drive fails, the warning signs are usually obvious. The stream of plastic starts to lessen and then stops; the printer keeps trying to print but extrudes layer after layer of nothing.The first things to do are stop the printer and ensure that the heater block on the hot-end is still at the expected temperature.

It is possible to capture existing objects into the computer so they can be modified or simply re-created using a 3D printer. This is particularly useful in the case of artwork or other unique formations that could not otherwise be designed easily in a computer model.The Glen Rose dinosaur track, for example, came from a laser scan of the original fossilized impression, which was used to create an electronic copy of the track that can be shared without risk to the original.

Here are some tips to keep your extruder and 3D printer happy. Keeping your extruder in tip-top condition is important, because the extruder is the device that takes the most wear and tear in your 3D printer. Follow this advice to make your 3D printing go smoothly, prevent failed prints, and keep your new 3D printer in action: Check the accuracy of your software and firmware.

The entire 3D-printing process starts with a 3D model. To achieve successful 3D printing of models is not a click-and-print process. You need to have the correct format of model and choose settings that will process that model within the limitations of the 3D-printing process.Objects designed for home 3D printing are ready-made models.

Many software packages for designing 3D models are available. Many are open-source or free and include export options that support the STL model format used by RepRap 3D printers.One popular option for RepRap developers is OpenSCAD. This free and open-source 3D modeling program is built and maintained by individuals.

You should work out whether you want just any 3D printer or specifically a RepRap. This distinction is important. Due to the demand for 3D printers, many companies have used the RepRap technology to produce machine designs that can be traditionally mass-manufactured.It's ironic that the success of a low-cost self-replicating machine now makes it so hard for manufacturers to keep up with demand that some companies choose to mass-produce parts.

If you have an STL model file for your 3D printer, you have to verify the model before you can print it. Software programs and slicing tools for 3D printing see all 3D models, including solids, as a series of triangles that join to create a hollow mesh surface. The triangles in your model must not intersect other triangles; if they do, they create an invalid mesh that causes problems if you try to 3D-print the model.

After Slic3r is installed and configured, you can use it to process your valid 3D printing model. Slic3r processes your model to create an output G-code file, ready for printing.Note: The example here runs Slic3r in Simple mode. When you become more familiar with your 3D printer and its capabilities, you can switch to Expert mode, which offers many more options.