If you want to press tips, you would be better off buying a Piccone press from EBay.
They mention that this is just to put a dome on an un domed tip.
This one screws in and altho the design is nice, I would be afraid that from the sideways
skewing motion from screwing the press together, it wouldn't be good for a single layered tip and worse for a layered tip. I mean, once the top of the press contacts the top of the tip, the tip is going to be skewed sideways. Like I said, this could rip apart or weaken a layered tip.
I would seriously stay away from this press.
The Piccone press comes with 2 pistons, one for undomed tips and one for domed tips.
You can press the Piccone presses with either a vice or a C clamp.