Upgrades for RattmMotor 3020 Plus CNC router: Vacuum cleaner adapter, cutter cooler

This thing is designed to use a vacuum cleaner (on lowest speed) to collect dust and - thanks to airguide - cools the cutter/engraver tip on a 3020 CNC router. Without the adapter, it can hold a d=31mm vaacum cleaner pipe. The adapter makes it compatible to 35mm pipes. Best if you open the air shut-off valve on the cleaner's pipe during it is enabled.
To fix te parts around the router motor, you need 2pcs of M3x16 screws and nuts.