I have converted my FT-5 printer to and from Bowden filament feed on a couple of occasions while settling into the (maybe) final configuration. In the process I was faced with having to do something about mounting the hot end onto the carriage when the extruder motor was removed. Rather than modify the existing carriage plates too much I decided to print replacements for components that were moved or eliminated. In this manner I could experiment with Bowden feed without doing anything irreversible.
This set consists of- 1) A bracket that will mount the extruder motor (NEMA17) and the extruder of your choosing onto a side 2020 extrusion 2) A lightweight replacement for the motor on the carriage 3) A set of clamp blocks for a typical E3D-style hot end 4) A handy 2mm thick spacer for NEMA17 motor ends
The motor replacement can be mounted with the 2-hole portion toward the bottom to maintain the original hot end height, or with the two holes toward the top to pull the hot end upwards which will gain some extra printing height if you need it. You can use this "motor" with almost any hot end mounting block clamp you want that is designed to mount directly to the face of a NEMA17 motor. I have included the ones that I used for my E3D setup, but there are many of them available on this site for other hot ends. Note that you may want to drill two additional motor mount holes in the vertical plate on the carriage if you don't have four of them (this is typical of early FT-5's). That will make it more stable.
I used M3 hardware for all mountings except where the extruder mount attached to the framework. For that I used M5 hardware.
**Just added-** A handy clip to help reduce end play in Bowden fittings. Yes, I know there are loads of them on the site already but I specifically wanted one that was "split" to clip on and off easier.