If someone wants to keep it cheap and wouldn't otherwise have any other use for a vice (everybody should have a vice though), I would think any C-clamp of the type below would work well as long as the jaw diameters are bigger than the tip and you keep the tip centered on both jaws.
The Husky 3 in. C-Clamp is easy to operate and ideal for DIY or household clamping. The steel construction provides strength and durability. The threads roll smoothly for easy adjustments.
I'm new to installing tips and heard of pressing tips but is there a set amount to press? Just press a little or go til it stops (within reason of course)