Kvalve top half - 10X step 3.skp (2.2 MB)
I am a model railroader and have been using SketchUp Pro 2016 & 2017 to draw up parts which can be 3D printed. I have learned that it’s much easier to draw an item many times larger than needed and then scale the finished drawing down to the size to be printed.
The drawing I uploaded is one I drew large, but cannot shrink enough to print. I drew the part ten times as large as the real life prototype part. The scale I model in is 7/8" per foot which is one 13.7th of real size. First, I used the SketchUp “Size” utility to bring the drawing down to full size. Once the scaling frame was in place, I entered 0.1 in the “Scale” box and the drawing shrank to a full size representation of the real part. Then, I tried to repeat the process to get down to one 13.7th of full size by entering 0.073 in the “Scale” box. This yielded a bug-splat dialog box.
Next, I tried to shrink another copy of the part in a single step by entering 0.0073 in the “Scale” box and got a bug-splat.
Finally, I tried saving the full sized file to SU 2016 format and tried the process again with the same results.
The drawing I uploaded has already been shrunk to 1/10 of the size it was drawn. So, it needs to be reduced to 1/13.7 of current size to be of use for 3D printing.
Effectively, I drew the part 137 times life size. Was that too much of an expansion? Is there some specific limit to how much a drawing can be resized downward? Is there something else going on which I don’t understand? I’ll appreciate any advice I can get.