Basic Wiper/Purge tray.

Each side requires 2x M6 Bolts and T-Nuts to attach to frame. Then use the silicone blade from a glass/car cleaning wiper like this, removed from the handle and cut to length.

https://www.amazon.co.uk/gp/product/B00NLGK8OI

Only 1 of these is required to make both sides.

Update: The wipers don't last very long and notch very quickly as they aren't temperature resistant enough...I now use a cut bit of a silicone baking sheet folded to form two layers.

https://www.amazon.co.uk/Silicone-Multipurpose-Jewellery-Multi-Purpose-Protective/dp/B08NPDGH6T

Set the height of the bucket on the frame so the wiper just brushes past the tip of the nozzle as you remove it from the docking pins.

Move the (move out) command at the end of tpre(x).g for each tool to the end of the matching tpost.g file. and then remove all x-y axis movement commands from the purge.g file. Tool will heat up in the dock and purge filament into the tray before moving out past the wiper as it undocks.

Make sure you remove the movement commands from purge.g, otherwise you'll likely get a tool crash.

E3D Toolchanger

No

No

L and R parts match the corresponding sides of the printer. Make 2.5mm holes in positions so the wiper is aligned with the nozzles on both tools on that side of the printer and use the small brace part to bolt then into the sides of the bucket with M3 screws.

This solution only works if both tools on each side of your printer (Tools 0-1 and 2-3) have similar nozzle heights.

Take care to match up the L and R parts, the gap at the back is to allow your ptfe filament tubes to fit behind. The front of the Purge bin should be level with the front of the frame if you have them the right way round.