GT MK8 Auto level for Prusa i3 Pro B

thingiverse

My First DIY Practical Part That Anyone Can Use If They Have An MK8 Extruder. I've designed this part specifically to fit snugly onto the fan of an MK8 extruder, and I've also made it compatible with the fan on a Pro C dual extruder bracket, which you can find more details about next once I finish adding a second extruder to my Pro B. This handy part is easy to install on a GeeTech single extruder Prusa i3 Pro, Pro B, and Pro C Dual extruder with just a few minor adjustments to certain firmware settings. To see me put this part to the test, check out my YouTube channel, where you can find the videos I made on it. You can also search for my user name: georgeroblesjr. If you're interested in purchasing these parts or learning more about my online store, feel free to contact me at georges3dprinters.com. Here's a step-by-step guide to help you build this practical part: To get started, you'll need 3-10mm x 6mm cylinder N52 magnets that can be ordered online, along with two M3 x 16mm screws, one M3 x 12mm screw, one M3 flat washer, and a push-button switch of your choice, like the one found on an old TV remote or purchased new for under $1.00. First, insert the magnets into their designated spots on the part. Next, remove the screws holding the cooling fan in place to the MK8 extruder and feed the screws through the mounting bracket. Replace the screws and parts as before, ensuring a secure fit. Take the push-button switch and attach two wires to its leads; these will be connected to the z-min stop, replacing the original z-axis min switch. Be sure to remove any obstacles from the original z-end stop, like removing the screw that actuates it. In my case, this was located on the x-axis motor bracket, so I just moved it out of the way. Take the Z-probe arm with the slot facing you and the holes on the side closest to the edge on the bottom. Thread one M3 x 16mm screw through the furthest hole from the right going through the arm until you see the threads emerge on the other side. Then, take the second M3 x 16mm screw and thread it through the hole closest to you from the left, continuing until about 2mm of thread are showing. With the M3 flat washer attached to the M3 x 12mm screw, feed it through the arm pivot point and mount it with the holes on the side closest to the edge towards the MK8 mounting bracket. Thread this screw in at the upper center raised screw mount. Lastly, place the third magnet on the head of the screw closest to the switch. At this point, your assembly is complete, but you still need to adjust the screws, firmware, and generate some G-code to make it work smoothly. To learn more about what I did to get mine working, check out my YouTube channel under georgeroblesjr.