an A-3D machine can be used to do almost anything -- it was originally setup as a 3 thread machine for thinner fabrics (due to the cam settings) -- over the years it may have been adapted any which way.
I'm looking at buying a A3D-W. Did you buy one? If so, what do you think? I need this to finish a scarf and I need it to be a purl edge. I need to find out which machine will do the work I need.