Air Cleaner filter frame box for Prusa I3 MK3S

prusaprinters

<p>This thing is an air filter for the Prusa I3 MK3S printer. If the printer is placed in an IKEA Lack cabinet than normally the PSU is removed and replaced with a plastic brace to reinforce the frame. I have designed this air filter to be a replacement for that brace. This way the air filter is sitting closest to the extruder intergarted into the printer body.<br/> This filter box is designed for a 120x120x40 mm high voltage 230V 20Watts strong fan. A very strong fan is absolutely needed to have enough air flow. The usual 12V computer case fan is unable to drive any air throught a usefull filter material.<br/> The thing uses two filters. For the input a 5mm thin 120mm diameter open cell coarse foam can be used. It is to prevent big particles to enter the fliter. The real filter is at the output side (back) . I use a 15mm thick 120mm diameter dense pressed cotton wool. I got both filter materials from an aquaristic store. You have to select the density of the material according to the power of the fan (trial and error)<br/> The box is assembled with 4x M4x80 screws and 4x M4 nuts. The grid goes in between the front part and the main body part.<br/> //Do not even think about using a real HEPA filter. Useless without a very high power blower. You need 100Watts at minimum to get it work. Than you have almost 100W heat in the printer cabinet.//<br/> Warning!!<br/> Use high voltage fan only if you are experienced with high voltage electrical cabling and insulation work. If you are not, than ask a certified electrician or engineer for help.<br/> I deliberately do not give detailed electrical installation instructions. If you need it, you better trust someone who knows it.</p> <p>I guess, that placing a shroud pointing upwards on the output side could induce a circular air flow in the cabinet. Hot air stuck in the top of the cabinet can be utilized this way. Could be good to print with warping materials like ABS.</p> <p>You are welcome to remix or design better solutions based on my basic idea.</p> <h3>Print instructions</h3><p>Multiple parts. 4 parts.<br/> Supports on build plate only, minimal.<br/> Use PETG color you like.</p>