Topic: How to hollow out a model.
Someone posted a video on how to hollow out a model for printing, however this was reliant on MakePrintables software which apparently is only available as an online service.
If you want to do this yourself, it can be (relatively) easily accomplished using Meshlab. This tutorial will explain how it's done.
Step 1. Open your model in NetFabb, and check for errors. Fix the errors (automatic fix usually works). Next open up your model in MeshLab. Click the Show Layers Dialog icon to open up the layers window.
Step 2. From the Filters menu, select Remeshing, Simplification & Reconstruction, and Uniform Mesh Resampling. On the pop-up dialog box, make the following changes: ON the Precision % dialog box, enter a value less than 1%. The lower the number the more precises the reconstruction, but the longer it takes, and the number of polygons increases dramatically. For the offset, we'll use an absolute number. IN this case, the vaue is 2 (as in 2mm. A positive number will create a shell on the ouside of the model, a negative number on the inside, so we want a negative number. Last but not least, check the Cean vertices and Multisample. This increases accuracy, and cleans up the resulting mesh. Click apply and wait.
Step 3. Once the filter has finished its job, you will see that a new payer has been added: Offset mesh. You can't see it because it's inside the original mesh, so click the eye of the original mesh to hide it and see the newly generated offset mesh.
Step 4. The new mesh's faces/polygons, are currently facing the same way as the original mesh, but it needs to be reversed, if it 's to become the opposite side of the shell/skin. So first make sure you select the correct layer to work on from the Layers window (Offset Mesh), then from the Filters menu, select: Selection, then Select All. This will select everything on this layer.
Step 5. You may also notice some stray bits and pieces, that may have been generated during the reconstruction process. If you do see those (as you can see in the image below, you should clean those up by selecting and deleting them. Once the model is clean, apply the filter described above to select the mesh, and click Apply.
Continued on the next post.
SD3 printer w/too many mods, Printrbot Simple Maker Ed., FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.