I think that it is very good for resin processing. Strongly, it is not so strong that it can not be used for drilling metal etc, wire will lose and thread it out. If we get a little more strength, we will expect more use applications, so we are expecting it.
It looks like the outer skin is so soft that it can not transmit torque than the wire itself. Twisted and heated to break the outer skin. I am sorry that we can use Dremel's flexible shaft if you make the connection part of the main body dual with dremel.