The underside will be quite stringy, but this isn’t usually noticable and allows a skeleton of a building to be printed with actual rooms inside.Have you ever created a 3D model that could not be 3D printed because of its fragility? Calculating the minimum wall thickness is one of the most important steps when preparing a 3D model for 3D Printing.
For most buildings the 3D printer can print over empty space and create a floor / roof just resting on the supporting walls. It isn’t necessary to have a solid model to print.
Rooms can be extracted to ‘fill’ the voids to give you a ‘solid’ model. This is much more robust than trying to union. You don’t need to boolean everything… I use Cura to print and it does a fantastic job of printing a whole bunch of solids as a single print. I have uploaded a graph that I developed for most of our 3D pri… Mesh Toolkit, Springs and Chinamo are the custom node packages I’ve been mainly using for this work. Just to answer your query in reverse… The room should be bounded by the roof, but it’s a Revit issue, if you drop in a section to see the extents of the room, then go to Architecture > Room & Area > Computations > Areas and Volumes need to be selected. This isn’t perfect, but is much more efficient than Sketchup > Solid Inspector. I have also knocked up a graph which takes a CAD import and exports it from Revit to Dynamo to Meshmixer DwgImportFromRevitToMeshmixer.dyn (16.1 KB). Getting rid of model lines and making sure family elements stopped me getting wierd messages.Īdding a recessed extrusion which completely fills the family opening (but is invisible apart from 3D views ) I think families will need to be built specifically to be 3D print compatable. I didn’t have much success working inside Meshmixer, none of the ‘Make Solid’ settings gave outcomes that I was happy with, I would do any repair work within Revit (when the export is that fast, it seems more efficient). Later on a more perfect model could be made for larger scale prints / presentations. For me, this means a quick concept model can be printed and taken to meetings as part of the design development workflow. Total time from Revit to Cura less than 5 minutes. This was with no work done in Meshmixer apart from ‘Combining’.
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