IKEA Lack Enclosure Anet A6 cooling duct assembly

thingiverse

Following up from my previous control board cooling fan cover design (https://www.thingiverse.com/thing:3032480), I needed a solution to ensure cool air from outside the enclosure could be drawn in, as I figured there would be a high likelihood of the enclosure temperature rising significantly when printing with ABS. I also wanted to create a method for allowing a slight positive pressure inside the enclosure to prevent dust entry. The intake cover is designed to use the fan screws to attach it to the existing cooling fan, which in turn is attached to the control board cover. This is mounted via the standard mortice and tenon joint from the original Anet control board cover. The cover has two threaded holes in the base that are designed to accept the intake transit pieces. A drilling jig is provided to ensure accurate drilling of the Lack table top, with the holes needing to be opened up to 42-44mm using a proprietary hole-saw or Forstner bit. The fan inspection cover has been designed to accept a 60mm perspex disc to enable the fan rotation to be viewed. (https://www.amazon.co.uk/Plastic-Circles-Acrylic-Transparent-Supplied/dp/B077H62GJK/ref=sr_1_2?ie=UTF8&qid=1537200948&sr=8-2&keywords=perspex+60mm+disc for example, although E-bay is sometimes cheaper.) I've uploaded a solid one for those who do not wish to glue the window into the cover and it has been streamlined to aid airflow to the fan. Either cover is a friction fit using stubs that locate in the fan mounting turret screw holes. The window cover can be removed using one of those suction cups used to change halogen GU10 bulbs. The plain cover has been designed to have a knob mounted with an M3 x 14mm screw and nut, the latter held captive in the knob. The next stage is to design a filter box to be mounted on the underside of the printer deck (also known as Ikea cardboard furniture) and probably incorporate an additional booster fan if necessary. Update: 08.09.18 - Filter housing now built and tested. See https://www.thingiverse.com/thing:3090158 for details. I've added the STLs here but the details are on the link.