hI all, I have been lurking on this forum and came accros This topic.
I have my 840 machine still in its packing and am due to start building soon.
I have been playing with the Vectric cut2d pro trial software and found it to be useful in that you can import drawings as almost anything, dxf, dwg, pdf, bit map..... and so on. it contains most cad tools you would need, including a vector joining mode and also a bitmap tracing tool which means.. scan as bitmap/jpeg etc onto a blank layer, import, trace round the picture on a new level, sort by cut2d cad. You can then work through all work and tool paths and then run these in a virtual way.
In the trial version you cant get any further so have a play (win7 back to xp needed) but if you buy the liscense, you then export the g code file into UCCNC or mach3 which will control the machine for cutting.
Pros - one program does most of the work
cons - bloody expensive (£360 inc vat for cut2D pro)
I have to admit that the worst bit is perfecting the pdf vectors but it seems to be the best program.
I have since found CAMBAM which is only 90 quid for a licence but the trial version opens 100 times before you have to buy.
Stumall