One obvious thing when looking at the Chinese laser is that the table to hold the workpiece is an unnecessary spring loaded contraption that limits what you can work on to 209 X 88mm. Why? Removing it reveals enough space to add a table measuring 350 X 230mm. It’s easy enough to trim the end stops so that the laser head can cover this area too. So on to making a more useful lasering area!
I started with some 10mm L shaped aluminium, cut some 90 degree notches in it so it could be folded into a rectangle. I made up some corner pieces to hold it in shape. These were initially 3D printed but I ended up CNC milling them from 5mm acrylic instead. The L shaped slot held the aluminium frame firmly and hex cutouts underneath held some M6 nuts. Some coach bolts provided simple height adjustment.
It was all finished off using some aluminium honeycomb (6.4mm cells and 10mm thick) from Easy Composites.
In the future this could be motorised, but for now this is all I need to cleanly cut sheet material up to A4 in size.