So i've had one round with this.
Initial review: Need more practice
For one, its a bit of a challenge to use by yourself. Being a 'tool' with which you need the ability to relax, its obviously not best suited for individual play. This doest necessarily reflect badly on the device, this is just some feedback for everyone else.
First of all, as per advice, don't close the device while its still in. Also don't slip when you're starting to open it up before applying the screw. haha
I lubed up and warmed up with a vibrator and the proceeded to easily slide the device in. There was no discomfort, as with everything, take it slow.
After that, its simply a matter of slowing opening the device inside. In the space of about half an hour I slowly opened myself up. The feeling was quite incredible.
I got to about 2.5" circumference. I was able to slide a couple of fingers in and out without really touching the sides, this was pretty exciting and I quickly found a good spot and couldn't resist but to finish myself off with my other hand.
Am looking forward to a bit more play and hopefully having another to help.
Have just picked up one of these for some self exploration.
Will advise how it goes, very keen to see how I go with it 😃