Minimum hardware requirement?

Is there a minimum hardware requirement for using TinkerCAD on a Mac? I am on a Mac Mini (Mid 2011) running 10.11.6  with 2.3 GHz Intel Core i5 and 8 GB of RAM.

I can only design in Safari (It keeps giving me a WebGL error in Chrome, even though I have the latest version). I can download my design as STL in the regular version, but not in the Beta version. I wanted to print something that I made in Beta, but there is no way I have found to get that design into the regular version. Copy and Paste doesn't work. I can't export the STL. Tried using "Share" and then importing via the URL, but that didn't work either.

The Beta version also has no way to "close" a model, as a far as I can see. The program seems to have a lot of promise, but I wouldn't be able to use it to teach a class of Middle School students until these basic functions work reliably. If it is something on my end, I'd love to know. Maybe we just don't have new enough hardware?


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