+1 for the advice from CHJ and Dalboy.
As regards the turnmaster tool, even though it has interchangeable cutters they will still need to be sharpened from time to time. It is a fundamental principal that when two objects come into contact with each other there WILL be a transfer of material from both objects no matter how hard they are. over time this will dull the edge of even the most durable tools.
You do not say what other tools you have but I suspect that if they came with the lathe as a set then they are probably a cheap poor quality set that are not up to the task. As many will tell you it is always best to get the best quality tools you can afford. Cheap tools will blunt too easily and is the cause of many people giving up shortly after starting. Spend some time learning how to sharpen the tools properly (there are numerous sharpening jigs available to help) and they will reward you with hours of fun and satisfaction.
As regards the turnmaster tool, even though it has interchangeable cutters they will still need to be sharpened from time to time. It is a fundamental principal that when two objects come into contact with each other there WILL be a transfer of material from both objects no matter how hard they are. over time this will dull the edge of even the most durable tools.
You do not say what other tools you have but I suspect that if they came with the lathe as a set then they are probably a cheap poor quality set that are not up to the task. As many will tell you it is always best to get the best quality tools you can afford. Cheap tools will blunt too easily and is the cause of many people giving up shortly after starting. Spend some time learning how to sharpen the tools properly (there are numerous sharpening jigs available to help) and they will reward you with hours of fun and satisfaction.