Choosing a Spindle for My LR3 Build with a 1500mm X × 2600mm Y Cutting Area – Need Advice!

Thanks, I asked at the Vevor chat, and they didn’t have any restock plans for the next 3 months. However, they did inform me that the spindle weight is 3.5kg.

@Jonathjon wrote he use:

With my planned 1500mm width at the X axis, what thickness of the 25mm tubing would you recommend? Should I go with normal steel or stainless steel if I choose a 3.5kg VFD spindle?
@Jonathjon, which thickness of the SS tubing did you choose? Any issues with the heavy spindle and the stiffness of the gate?
Looking forward to your advice!