To fix a scratched build plate, you can use a raft on your models to avoid the scratches being present on your model. You can also remove the burrs from your build plate by sanding it with 120 & 80-grit sandpaper on a flat surface. Another method is to sand the entire build plate with sandpaper or palm sander. To sand your build plate, you first want to clean the build plate with isopropyl alcohol and a lint-free cloth. Then you want to place the 120-grit sandpaper on the flat surface. Next, move the build plate over the sandpaper to remove the scratches and level out the low spots on the plate. Thanks to a specially patterned surface, our steel plate has improved adhesion compared to most original platforms, which greatly increases the success rate! Some people recommend to put the sandpaper on a flat surface like a glass surface and pass the build plate over it repeatedly until the burrs are gone. Best Resin Build Plate Replacement – Anycubic Photon, Elegoo Mars & More For this purpose I used 2 super strong neodymium magnets in the size 20x40x5mm, which I had lying around here and glued them with super glue on the TOP of the platform.

The home function of the printer does not ensure that the last set zero point is directly approached. Instead it works like this: After the build plate is level, you can use the 80-grit build plate to add a bit of texture to the plate, sanding diagonally to put scratches into the build plate. After that, clean the build plate again with the isopropyl alcohol and lint-free cloth, then you should be done. the magnet pad can detach from the platform if the glue is dissolved by IPA or similar agents (has happened to me).There are several ways you can still fix and use a scratched build plate: Some of these methods include:

As an alternative, there are recently the flex plates. These thin metal sheets are held to the platform with the help of a magnetic intermediate layer. After printing you can detach the flex plate from the printing platform, bent it and your model will detach from the flex plate easy. -easy peasy Some people take the build plate and put it in the freezer for a few minutes. The cold shrinks the model on the build plate, making it easier to remove. Apart from this, it works pretty well. Most users say it’s quite easy to flex and pop prints off the build plate. ELEGOO Mars Build Plate Please print the "ChiTu Mainboard Specification" gcode file that comes with the original USB flash drive of the printer and then reset Z=0. A raft helps prevent the bottom of the model from sustaining damage from the build plate. It takes the hit from the scratches giving the 3D model a smooth surface to build on.If one had dealt attentively with the topic, one would have realized that one must print out a spacer with the old platform BEFORE modification, which must be inserted between the flag and threaded spindle. Additionally you need to replace the 2 screws with matching ones, because the original ones are too short, of course. You can rotate the build plate and continue sanding for a more evenly sanded build plate. To know whether your build plate is sanded evenly, you should see the surface has no visible low spots with a uniform surface color. This is because the resin printer fills in the scratches on the build plate using the first layer. The first layer cures into the scratches on the build plate, giving the model additional grip on the build plate. However, the user reported that the scratches didn’t affect the model’s quality or adhesion. In fact, they say the model was even harder to get off the build plate after the build plate was scratched. At least it worked for me with models larger than 130 mm and really heavy (last model about 250 grams!).

Step 4: Once the build platform stops, adjust the platform to keep it in the center position. Then fasten the screws with the wrench. A raft also gives your model a bigger surface area to print on, increasing its adhesion to the build plate. Step 6: After the above leveling is complete, set the current Z axis position as the initial height of the first layer position.While sanding your build plate, always use gloves and a mask to avoid inhaling metal particles. Also, most users recommend that you grip your build plate in a way that ensures the pressure across its surface is uniform. If you get that right and the print holds on the flex plate (more on that in a moment), it's a great thing. Most of the time, you can either live with the scratches on your build plate or fix them. But sometimes, the damage might be too extensive, so you’re going to have to replace the build plate.