My blender file will not print; any suggestions? I have a 3D printer and after learning of blender (and rebuilding my computer to handle it properly) I delved into 3D design for table top mini's.  I'm using Blender 2.90 currently.  The object in question does fit on the printer bed that I'm using (a monoprice III v.2).

I've created an image that will function as the base of a tower I'm designing but for the life of me I cannot get it to print.  That means either a, the 3D print software I'm using is in error, or the more likely b, I've done something with the file that is causing problems.
When I load the file as a STL the print software doesn't show it with levels.
Here's a link to the file if anyone wishes to take a crack at it.
Any help would be appreciated.
It's a curious model. I have 2.83 and the file opened fine, no obvious problems. Export to STL appeared to go well. Meshmixer is also happy with the structure.
The model appears to export at 0.11 mm diameter. My first move was to increase scale to 2540, a common number for inches to millimeter or the reverse, I can't recall. Still too tiny, but when using a scale factor of 25400, the model becomes 29 mm in diameter and 5 mm high.