Thank you for sharing photos. I also noticed some of your circles are not closed. This could be caused by mechanical issues like insufficient belt tension, gantry slop, idler wheel issues, or pulley set screws not being set or installed properly.
The design being offset is an indicator of skipping steps during faster travel moves. Each machine is unique and the board must be configured to fine tune performance. Some of the default configuration settings are set relatively high, so we can decrease values to test out until the desired results are achieved. Try the following:
- Power off the C3D Board and remove the memory card. No lights should be on.
- Put the board’s memory card into your computer, using a MicroSD/ SD reader if necessary.
- Open the config.txt on the memory card using an editor such as Sublime Text. Do not use Notepad++.
- Decrease default_feed_rate (Ex: 2000 down to 1000 to test)
- Decrease default_seek_rate to slow travel movement (not cuts), testing lower values incrementally until fine tuned (Ex: 18000, 12000, 9000, 6000)
- Increase current levels to dial in stepper motor performance (Changing Stepper Motor Currents on the LaserBoard )
- Decrease max speeds, testing lower values incrementally until fine tuned (Ex: 18000, 12000, 9000, 6000)
- x_axis_max_speed # mm/min
- y_axis_max_speed # mm/min
- Decrease acceleration to slow moves between cuts (Ex: 2000 down to 1000 to test)
- Save the config.txt file on the memory card.
- “Safely Eject” or “Unmount” the memory card.
- Put the memory card back into the board and power up.
Also, we received your email regarding your concerns. We were in the process of troubleshooting to determine what the issue could be. It takes time to review and get enough information to problem solve, so we appreciate your patience while we work through this together.
If you are still experiencing unexpected results after making these configuration changes, please let us know and we will explore other options to help isolate the issue.