I have seen that thing so many times.....
Probably the best comment I have ever seen on the matter:
it is unrealistic to expect an inexperienced beginner to achieve similar results on their 1 and only cue shaft.
First, the machine is crap. It could be made to work of course....but at risk to your shaft as was said.
The first thing I think about is risk to your person though. Kind of comes with the territory of what I do.......
Think of it this way: You have a quantity of hardwood rotating at a fair velocity in front of your face. This can be fairly exciting if certain parameters are out of tolerances....as in anything is off center, loose, etc....and considering how light this particular machine is I am confident it would become much more exciting much sooner than anything else you could buy.
If that isn't enough: Consider the matter that you are going to contact a quickly rotating mass with a sharp utility razor blade very likely held in your fingers. As the razor is torn from your fingers it will not leave your grasp peacefully. Where it is destined to deposit itself is a mystery, it could be in the wall or the ceiling....or perhaps you will recall that we earlier considered the proximity of your face to all this excitement.
And if that still isn't enough: Consider that people investing in such equipment are unlikely to have a proper shop and will likely be setting this thing up on the dining room table. OK...I'll give you the laundry or garage. If there is a child or spouse around, somebody else you care about....consider it may not be you that gets hurt but them.
I looked at and considered a lot of different options. This was one. I no longer consider such things. I want a cue repair lathe.
Unless you have a really big cue collection or flip a lot of cues, you won't really have enough work to get the experience needed to use the machinery properly.