Hi me3,
I emailed them and their response was: ( I must say my dealings with them (ooznest) so far, browsing their web page and range or hardware, seeing their online assembly instructions etc - it does come across as a very crisp, professional offering)
The easiest way to gain extra cut depth is to attach a spoiler board, which is the same size as the machine footprint, to your Workbench. Then fix the machine on top of this Spoilerboard, and remove the spoiler board supports. If you originally had a 12mm spoiler board, this would gain you an extra 52mm of Z-Travel, this an extra 26mm of cut depth. Bringing the total cut depth to 73mm. There wouldn't be anything of that sort of travel we could offer I'm afraid.
If only milling something like foam board I wondered if you could simply jack the frame even higher from the worksurface and swap the Z frame for a longer one to achieve perhaps upto 450mm travel.
I am 100% new to this subject matter, I understand steppers and how to drive them and that's about it! So my learning curve is vertical.
My destination is some of the pictures below. I realise now that one of the most significant factors is with any cnc machine is the stability/rigidity of the structure and moving parts to maintain accuracy of cutting. I also think I really need (want) a 4th axis :)
I need to decide if I am only ever going to mill foam board etc. or do I want a future capacity to mill wood or perhaps aluminium as it will have a significant impact on what I invest in.
There are some stunning second hand options on eBay/Facebook market place - but the pandemic means that these options for now are out of bounds unless using courier collection/delivery - like many, I like to see the item I am purchasing before I hand over squillions of beer tokens so I have drawn a very frustrating blank on that one for now - maybe just as well as I would have a beast sitting in the workshop right now before having completed my full research/evaluation.
I am tempted to buy a nasty cheap £100 3 axis laser mill from eBay and hook it up to Mach 3/4 to learn the software and G code before spending ££££. - Head over heart - would be the first time...
Oh and of course the minor issue of having the design completed in CAD/CAM so send to the cnc machine - I am currently playing with Fusion
I have found this subject quite absorbing, so will have enjoyed the research and learning and sincerely hope I don't end up with a "white elephant" sitting gathering dust




Regards
C-3PO