Bevel the bowden tube ends

I use a very convenient tool to deburr/countersink/bevel the bowden tube ends. I found it by chance and it is very cheap. Now I use it everywhere (it also will deal with aluminium by the way).

There are two reasons to use it on bowden tube ends in my opinion :

• it reduces friction of the filament on the tube square edges
• it makes the tube softer so that it can be applied with progressive force against the PEEK for example, for a better seal

Before buying the tool I used my biggest drills, but it was much harder to do a proper job.