Hello Acute cuts.

Thank you for taking the time to share your detailed feedback. We are sorry to hear about your experience with the 24V 4.5" mini circular saw and the accuracy issues you have encountered.
The saw is designed for light-duty, precision trimming and quick cuts, so it should be capable of making square 90-degree cuts when properly adjusted. A bowed or misaligned base plate is not expected and would understandably affect performance and cut accuracy. We appreciate you bringing this to our attention.
With 18 months of ownership, we encourage you to contact Greenworks Customer Success so our team can review your concern, confirm warranty eligibility, and discuss options. They can be reached either using the online chat function, on Greenworks Tools page, accessible by clicking “Chat Now” in the bottom corner of your screen, Chat with a Live Agent or by calling 1-888-909-6757. So, our experts can discuss your experience please have your unit, battery and charger with you along with the model and serial number to complete troubleshooting to ensure quick resolution is provided.
Your feedback is valuable and will be shared with our product team to help improve future designs and quality control. Thank you again for providing an honest assessment. We regret that this tool did not meet your expectations and appreciate the opportunity to address your concerns.