I didn’t elaborate since it was a long and tedious step but I guess I should have made it clear what was happening. Since I was just printing out the exterior of the building, I wanted to make the whole model a solid block. This meant deleting everything within the model and then adding blocks/objects to fill the interior of the building. Another reason for this is to thicken objects that are too thin to print. I made that mistake on my first print which is why parts of the parapet were chipping off. I went back to the blender model and thickened the roof as well as the parapets. I guess you could try to do this in revit but it would require making families with thicker profiles and messing with other parameters. Hope that helps!

@@dmontenegro Hi Daniel, thank you so much for your help. I have been trying fuind these answes in KZfaq, reddit etc. but you compiled most of them here. Just another question, I have created several switchroom at work dimensions like Length 6m by 3 m, or 18m by 6m etc, these switchrooms are suppotred by Columns and bracings which are 75x75 SHS, when I scale down the 6m by 3m one, I have to scale down to 2.5% to fit the 3d printer, the STL becomes so thin it just prints some strands of plastic rather then a 300PFC Chassis. How do I get a proper scaled down solid model? Do you have any solution for that?

@@opencanvasih I came across this problem too. At the very end of the video I have 2 prints of the same model with slight alterations (model 1 was a complete print w/ minor warping, model 2 was a failed partial print). The parapets and roofs were paper thin in the first print, so I went back and extruded the faces in blender to thicken the walls of the members. Aside from the failed print (model 2), that portion of the building came out better than the first print. So tweaking the thickness will be the key to your problem. It wont be an "exact" scale model but it be close to it. So in blender you would have to edit the columns to be thicker in the x and y direction (x2 or x4 thicker than the actual column dimension). It will look weird and not be to "exact" scale but its the only way to get the column to print at all. When you scale your model down to fit in the print bed you have to look out for those members/pieces that are too thin or small to print. Either edit the model in blender to be thicker in certain areas or avoid including those members from the 3D print model.