![]() Since the software only knows about the steps and thinks they correspond one-to-one to a distance change, it tells me that the z-offset is larger that it actually is. When the motor has to work against the spring to push the nozzle down, the slight flexibility in the belt means that it has to do more steps to get to the build plate. This is what happened with the calibration. This is not a problem if the load on the belt is constant, but when the load changes, the height will not follow the steps of the motor one-to-one any more. Click Cetus ROM Update button and select the ROM file you would like to flash to the CPU. Do not open UP Studio or Cetus3D printing program. At least the z-axis moves a little bit up and down when pushing or pulling on it. Connect the printer to computer with USB. The z-axis belt seems to be slightly flexible. And it is easy to see why that is happening. When calibrating the nozzle height with the spring installed, I got considerably larger values for the z-offset than without it. We are also providing upgrades: In the kickstarter campaign, backers could choose to upgrade to a taller version with a build volume of 180x300x180mm. This is when I noticed that the spring approach might not work after all. Fortunately it stuck on the left side and the print was finished and produced a usable (albeit lightly skewed) spring. Cetus2 3D Printer, Revolutionary On-the-Fly Switching for Multi-Color & Multi-Material 3D Printing. This reduced the adhesion and the raft peeled off on the right side of the print. Cetus2: Original Material&Color Mixing 3D Printing. The z-axis could not reach the position it wanted to and the first layer was extruded at a too high position. I forgot to remove nr 3 before starting the print of nr 4. While printing nr 4, it also became obvious why this parameter had to be tuned: It took me until iteration 4 to get the height just about right. The nozzle could no longer reach the build plate. The first iteration already seemed promising, but it was too high. Software Interface Account UP (Print) Library Help Account Printer name Current Settings Material Share Nozzle & Platform Connection Printer Status Skin type. So I designed a plastic spring in Fusion 360 and got printing: ![]() The spring would probably not be able to stop the thing completely before the nozzle touches the build plate if the z-axis fell from the top position, but a decelerated impact would be better than a full speed one. ![]() In normal operation, the z-axis would push the spring down to build the first centimetre of the prints. My first idea was to print some sort of spring mechanism that would catch the y-axis when it comes crashing down. Also it is much more fun to design your own solution. I would like to avoid any manual locking or unlocking. When the z-axis is locked, it needs to be released manually when one wants to start a new print. This is done either manually or when the z-axis reaches a certain height. There are already a few designs out there that deal with this problem, but they usually just lock the z-axis completely.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |