Z-Axis Induction Sensor for Wanhao i3 / MakerSelect 3D - 12mm Z Probe

thingiverse

I hacked up and tailored TheLost's design to mesh perfectly with the Wanhao Duplicator i3 layout. To install, take out the extruder fan and the spacers between it and the heat sink. Use this piece in place of the spacers and reassemble. There are other tutorials available on how to update your Melzi firmware for auto-leveling, but most come with limitations due to memory constraints. I suggest this modification if you're planning a Ramps 1.4 upgrade. I left the 3mf file here so you can edit as needed. The cylinders used for holes aren't subtracted yet, giving you the option of using the original 3mm or creating 3.2mm or any other size as required. NOTE: If you're still using the stock blower, the first version I created might not fit properly. Try the "Stock blower" version, which moves the z-probe 3mm further out. It's a tight fit, but it should be okay. Print Settings Printer Brand: Wanhao Printer: Wanhao Duplicator i3 V2 Rafts: Doesn't Matter Supports: No Resolution: 0.15 or 0.2 should be fine Infill: 75% or more; this thing needs to be rigid and not prone to bending or snapping if you accidentally ram the build plate! Notes: Given the need for rigidity and heat tolerance, ABS is your best bet. PETG is a decent second choice, but its flexibility might be problematic in this application. PLA is not recommended. My first print was stable with 50% infill, but I misconfigured my level settings and ran the hot-end into the build plate, which snapped the mount. I recommend 75% or more infill if you want this to be rigid. Post-Printing Depending on your print, you might have to drill out the 3mm holes. If you're having trouble getting the heatsink to fit well, use a drill and expand the holes a bit more in the print. I used a 1/8 bit and had to make things a little looser before the fit was just right. The 12mm hole is likely going to be a tight fit and might require some sanding or filing to get the part through. I left it like this because your slicer settings are probably better than mine, and you might not have this problem. How I Designed This You're going to laugh at me... I actually just used the 3D printer app that comes with Windows 10. I split the model up into parts and resized them according to the dimensions that better suit the Wanhao design. I then added a few cubes, resized them, and rotated them to add a more solid connection between the probe mount and the fan bracket parts. Finally, I split off the excess from the extra parts and made the holes a bit wider to accommodate how my slicer tends to make holes a little too snug sometimes; the holes are about 3.2mm wide in this design, whereas the screws are 3mm. The z-probe hole is 12mm and is a very snug fit, but that's big enough for sandpaper or a nail file to adjust, so I didn't bother changing it.