I bought some blank firesteel rods and now I created a nice and simpe handle for it.
Print was really easy, with a raft and a little support. See pictures for details.
I used the rods: 75mm x 6,45mm
The rod goes 25mm inside of the handle, so it should be no problem to carve the hole bigger if you like.
Infill: 100% (Outdoor use!!)
Print-time: approx. 1,5 hours
I used this filament:
Here are some links to rods you can buy on amazon:
I used the following tape on my CR-10:
This stuff is really great, no extra glue needed, 100% sticky to the printed parts, which come off really easily, even without destroying the tape.
Another very hot tip is to use kapton tape! Here you get the glossy finish and perfect adhesion like with the blue tape! Look at this:
200mm Kapton tape: http://amzn.to/2nPggqi
(Amazon Affiliate Links)