MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
100% proportion is perfect for Ender 3 v1.1.6 shipped April 2019 (with removable bed). 99% didn't feet for my Ender 3 (it was too tight).
Edit: Sorry I was wrong!!! My Ender 3 printer was not properly calibrated. I didn't printed it yet again after calibration, but I will let you know.
This is one of the first thing everyone want to print. Please ensure that your printer is good calibrated. Don't print larger objects before calibration.