I’ve never been able to get on with them, much preferring a twin-lever capper that I’ve had for years. Sure, it’s not quite as simple to use, but it does seem to do a better job of putting on the caps than my benchtop version. Here they are:
A cap put on by the benchtop model looks like this:
Compared with the twin-lever model:
It’s clear that in the latter case the cap is crimped around the “skirt” much more effectively. And this is confirmed when the caps are removed. The benchtop capper has done such a poor job that the cap is barely distorted when removed, whereas the twin-lever machine means the cap is clearly bent when removed:
I’d love to know how to get the benchtop one to work as well as the twin-lever system. It would actually make bottling quicker.