03-12-2023, 11:57 AM
People use 5" chucks on these lathes all of the time. For hobby purposes I doubt it would be an issue. I wanted a 5" 4-jaw chuck but LMS didn't have any in stock and I needed a 4-jaw chuck for a project i was working so I got the 4". I also got a 4" 3-jaw chuck shortly after I bought the lathe. I had an issue with the 3-jaw chuck and LMS replaced it and paid to ship back the defective one. Good customer service. I assume Amazon would also allow returns. 
Ed
Ed