The short answer is no, we only started selling the assets three weeks ago, a few months after announcing the shutdown.
The longer answer is that selling part of your business while continuing in a business that is in any way related is usually very challenging from a legal standpoint. The lawyers call it the "spaghetti effect", basically the IP tends to be really tangled. We had serendipitous developments a few weeks back in how Airstone is built which let us create a hermetic barrier between the Airstone and Tinkercad IP's. Before that happened we had no way of selling the IP without taking an unacceptable risk.
The longer answer is that selling part of your business while continuing in a business that is in any way related is usually very challenging from a legal standpoint. The lawyers call it the "spaghetti effect", basically the IP tends to be really tangled. We had serendipitous developments a few weeks back in how Airstone is built which let us create a hermetic barrier between the Airstone and Tinkercad IP's. Before that happened we had no way of selling the IP without taking an unacceptable risk.