IKEA LACK for Prusa MK3 with MMU2 and 5 spool Dehydrator
Since I am already waiting since end of December 2018 for my MMU2 upgrade I decided to use work in advance to make life easier and create better things.
The whole design is based on using the bottom blower assembly of an already available food dehydrator and an Ikea Lack enclosure. By doing that I will create a filament dryer which is not only capable of keeping filament dry all the time, but also have room to accommodate 5 full size spools (See figure 1) within the Lack enclosure itself (See Figure 2 for existing contraption).
I intend to produce 5 Universal Auto-Rewind Spool Holders as designed by Vincent Groenhuis (https://www.thingiverse.com/thing:3338467) and place them underneath the printer in the middle cabinet.
The cabinet has 3 compartments assembled and cut to size from 3 Ikea Lack Tables. (See Figure 4). The top compartment is used for the printer and has Acrylic windows around. The spools are placed in the middle compartment. They are accessible from the rear and are placed on a drawer again surrounded by Acrylic windows. The window that is connected to the drawer will have connectors to hold the PTFE tubes running to the MMU2. The drawer will slide out easily (See Figure 6 and 7) by using commercially available runners (See Figure 5) allowing to replace spools without problems.
Hot air is blown from the dehydrator blower into the middle cabinet via an expandable hose as used in air conditioner units. Using this arrangement will allow to place the blower at any place inside or outside the lower part of the enclosure (See Figure 8).