Elekslaser A3 Engrave Times

[RoganJosh]

Hi, I was considering buying an Elekslaser A3 to engrave large scale halftone photos onto paper and canvas but I am slightly hesitant now after reading how slow these entry level machines are. How long would it take to engrave a 30x40cm (max size of engraver) halftone image converted in photoshop take? Is it even possible to complete something this large in less than a day? There are larger (100cm x 100cm) engravers on ebay but I imagine a full size halftone would take weeks to complete

Also, are there ways to pause the engraving to complete over several days?

Any help would be appreciated, thanks.