Can't get .stl file to load iny profile. It fails with unknown error. I even tried to upload a file that I've uploaded successfully before but they will not upload now. It just gives a pop up window thay says unknown failure. Help please.

@nolando13 you can use your phone and the polo print app. You'll download the stl file from thingyverse or printables then you can upload the stl into the polo print app then print from the app. See the video link in the post above for polo print app to see how to load your stl to the app. Its not the optimal option because your customizing options are limited, but it works.

@陆 Eric, thank you.

@陆 Eric, thank you I'll give it a try.

Along with a change scaling by % option, an option to change the orientation of the part on the print bed would be helpful.

@陆 Eric, could you explain what printing this file does?
Will this same file work for the Tina 2 plus v3.?

On a print thay has multiple pieces, where one part is too large and needs to be scaled down, how do you scale all the other parts to the same scale? I know there is the resize option where you can change the X Y and Z sizes but how do you make sure each part will still work together?