VEVOR Heat Press Machine, 15 x 15 inch, 8 in 1 Heat Transfer Machine with 30 oz Tumbler Press, 360° Swing Away Digital T-Shirt Pressing, Teflon Coating, for T-Shirts/Mugs/Hats/Plates, Black+Blue

My wife uses the Epson Ecotank but it has to be converted to it and it has to be brand new since it use a different kind of ink, once you add the special ink you won’t be able to use it as a regular printer and the warranty gets void, it was still cheaper to do it this way than buying one of those expensive printers. There’s videos on youtube that guides you on how to.

yes they sell several attachments.

Sheet metal is better, they are made of different materials.

I did not find any information about replacement parts in the product description or customer reviews.

Yes, it can print on curved surfaces like mugs. The product description states that it comes with a tumbler press attachment suitable for sublimation printing on mugs and tumblers.