I have a skipping extruder,

I have a skipping extruder, what is the best 3d printable extruder for a bowden?

What extruder you are using, what type of filament you tested and what was the temperature? Which type of hot end?

For non-geared bondtech mini

this extruder: http://www.ebay.de/itm/172185688630

this hotend: http://www.ebay.de/itm/351806902721

and 1.75 mm esun pla

find out what causes it to skip before increasing force. Else the filament itself will be the weak spot and you replace skipping with grinding.

Skipping as in the motor or is the gear not gripping the filament?

Gear not gripping the filament

air tripper http://www.thingiverse.com/thing:35404

The airtripper looks interresting

It’s what I use on my DIY printer, works great for me. Only real change is where they used a rubber hose for the tensioner, I used springs.

Saintflint is good as well. Lots of grip

B’struder http://www.thingiverse.com/thing:711401