front spool conversion by central filament sensor

Update 16.03.2024:A new version (V3) is now available and got slightly changes to fit better into the extrusion. Feedback very much appreciated!Update 24.02.2024:A new version with a slotted hole is now available. This allows the position of the sensor to be changed. See last picture.Update 02/2024:V2 is now available. This version contains filament clips on both sides! See last picture.Convert your printer to front spool mountingRotate the original spool arm to archieve ergonomic spool change.Double spool readyFor those who dont want a double spool config, there is a version with holes at left / right - so you can choose your desired side.For those who don't want to decide at all, there is a holder with a slotted hole. Here you can loosen the screw of the sensor, slide it and screw it tight again. Three predefined positions (left / center / right) are already available.Supports simple and quick filament change / color changeYou can easily and quickly change the filament / color with a second spool holder (I used this one). Meanwhile, you can prepare for the next filament change without having to rush.Better guidance and tensionWith this holder, you move the filament sensor to the center below the spool holder and thus improve the guidance and tension of the filament compared to the original mount point.Compatible with all 2020 V-Slot extrusion railsThe holder is specially designed for the following ****** models:Neptune 3 Plus / MaxNeptune 4 Pro / Plus / MaxNeptune 3 (standard & Pro) and 4 (standard) are not compatible as these models do not have 2020 extrusion!PrintThe model is designed to be very accurate / tight. If you have not calibrated your printer, it is better to print the model with +- 1-2% scale.Print up side down and use supports.Installation1) Unscew the original spool arm, the filament sensor and it's brace and keep all scews.2) Place the holder on the 2020 extrusion and press from above - it snaps into place audibly.3) Install the original spool