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While the default DeScribe settings work in many cases, high precision parts may require careful tailoring of the printing parameters, such as laser scan speed, laser power, hatching distance, among others. The quickest way to test a variety of these parameters is with the Advanced STL Processing tool in DeScribe. Using a test STL, usually a small part or feature, one can generate a 1D or 2D array of parts with parameters varied between a start and end point. The image below illustrates a 4x4 array which varies scan speed and hatching distance, which impacts effective laser dose and can highlight issues due to proximity effect:
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File Generation and Hierarchy
Advanced printing procedures often require modification to the basic files generated by the DeScribe slicer. In addition to offering much greater control over your print, a user can stitch together multiple jobs into a single part with differing print modes, or even objectives. Many of the most useful commands are highlighted in the sections below. A full reference list is available on Nanoguide and in the DeScribe editor under Window → Command Reference.
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The code after the standard header text in the job file is below:
var $centerX = 0 % Include slicer output MessageOut "Pedestal printed" %Displays a message in the NanoWrite info window MessageOut "X center:" MessageOut "Printing statue" for $i = 0 to 1 % This loop prints two sets of 'statues', adding 200um in Z height each time to ensure they print atop the pedestal end |
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The folder contains two sliced parts: pedestal.stl via 25X Swift Mode and statue.stl via 25X Balanced Swift Mode. Master_job.gwl contains the commands to first print the pedestal and then two copies of the 'statue' atop. When generating a 3D preview, the final object should look like this:
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