This mod is for the SeeMeCNC H-1 and is a complete redesign of the X-Carriage using PLA bushings and a Quick-Fit adaptor. A Quick-Fit support has also been designed for Steve's Extruder. This support is also designed for Budaschnozzle 1.0 but can be easily adapted for other hotends.A video of this things installed is available here : http://youtu.be/DFIuspUwfxoYou'll need :Print the provided bushings with PLA. Print all the other parts with ABS.Enlarge/finish holes with a drill if necessary :Tap with M4 tap the holes on the quick-fit support that will holds the fand duct.Glue the LED ring on the fan duct with hot temp silicone. Glue the 40mm fan holder to the back of the fan duct. Push your fan in the holder.Glue together par 1 and 2 of the side fan using super glue. Screw the caseless 40mm fan to the enclosure. Push the top after properly guide the power cord in the dedicated hole.Glue with super glue the PTFE tubing in the filament guide of the quick-fit support. Fix the budaschnozzle to the bottom of the support after guiding the cables to the dedicated holes.Assemble the X-Carriage with M3 screws. Push-in the PLA linear bushings. Put the 624ZZ bearing in the bird nose and X-Carriage and fix it with M4 screw.Install the X-Carriage to the H-1. Install the side fan. Install the steve extruder to the support. Because there is not so much space, you'll have to make a gentle rotation to insert the steve extruder support to the X-Carriage quick-fit support. Turn the bird nose to tight the assembly. Install the fanduct with M4 screws. Manage your cables !