Upgraded TEVO Tornado Hot End Fan Mount

cults3d

This is a surprisingly straightforward hot end fan mount upgrade for the TEVO Tornado. It utilizes the original two fans already on the stock hot end and attaches to the X-carriage with ease. It offers several advantages over the hot end fan apparatus holder that comes stock with the printer. Firstly, it directs airflow solely onto the heat sink, not the hot end, allowing for more stable temperatures and greater efficiency if you value that. Secondly, it positions the heat sink fan higher above the print bed, angling it away from the print bed, significantly reducing the chance of sucking up strings from the print. Be mindful that I have a Tornado bought in mid 2018, and the design for the Tornado varies with different iterations sold by TEVO. If you have an older or newer Tornado, this fan mount might not work for your model. Unfortunately, I can't test this fan mount on other versions of the Tornado, so if you have a TEVO Tornado bought during a different time, please post feedback that tells whether it works or not. If I had to guess (which I am), I bet all newer models of the Tornado will accept this upgrade. Build Instructions: For printing, position the fan holder so that the face holding the bigger fan is flat on the print bed. If you struggle with orienting the model, here are the angles of rotation I used in Repetier: X:225 Y: 0 Z: 180 You need to use supports, but only for the edge of the mounting plate section (noted in one of the pictures above). To achieve this, set your support threshold to 15 degrees. It's ideal to use a brim with the print because it has a fairly small base on the print bed. ABS is ideal due to its ability to withstand heat better than PLA, but if you have to, PLA should work well, though you might notice some sagging in the part over time. For assembly, start by taking apart the original fan mount. Be careful to keep track of your screws because they're the only ones you have. First, unscrew the screws that mount the entire fan mount into the X-carriage. Next, take out the four screws that hold the heat sink fan in place and the ones that hold the part cooling fan in place. Notice that there are two different sizes of screws used for the part cooling fan; the larger ones correspond to the lower holes. You'll also see that the vent on the end of the part cooling fan falls off without the screws keeping it in. Now, carefully separate the fan wires 3-4 inches out of the wire tube thing that holds all the wires going to the hot end together. Slide the part cooling fan vent into the part cooling fan and slip the screws through the bottom holes on the fan, holding the vent in place. Now screw on the "Part Cooling Fan Screw End" model onto the bottom two screws you just put into the part cooling fan. Before mounting the part cooling fan, mount the heat sink fan. To do this, orient the fan so that it is still facing the same way as before (the label facing the heat sink), but this time the screws will go into the other side of the fan than before. It's a good idea to put the screws into the fan in this orientation before mounting the fan and then take them out. That way, the screws can press their threads into the fan's plastic and make for easier screwing in when you mount the fan. When you put the two bottom fan screws in, they won't go in all the way without hitting the fan duct. That's okay, as long as they keep the fan secure. So only screw the bottom screws on the heat sink fan until they hit the fan duct. After mounting the heat sink fan, mount the part cooling fan by screwing the top two screws into the little arm on the right of the model. Turn the screws so that they are tight, but be careful not to bend the plastic on the fan. Now the new fan mount is ready to go onto the X-carriage. When positioning the fan mount onto the X-carriage, make sure that the hot end wires are held back by the little arm on the right which the part cooling fan is mounted to. Now line up the holes on the fan mount with those on the X-carriage and screw the remaining two screws into place. After you finish the whole process, it's best to do a PID tune on your printer because the previous PID tune is accounting for the heat sink fan blowing on the hot end. There are many videos on doing a PID tune on YouTube if you don't know how to do it. Most things are easier said than done, but after typing this ridiculously long set of instructions, I can say the opposite is true for attaching this upgrade! Happy printing!