Hi Michael, my machine is around a year old. It has hiwin profile rails on the long axis and unsupported rounds on the other two. Ballscrews on all three axis.

In soft plastic and foam it is really accurate and I can get rapids of 3000mm/min pretty easily and smoothly.

Its really only with harder materials it begins to struggle, luckly I have had quite a lot of work given to me for prototyping in soft plastic which has made the machine pay its way.

I don't know if it is worth modding the machine to be able to process hardwood, I could keep it solely for softplastic and modelling foam. But if I could do it with as little risk to ruining the orginal machine as possible it may be worth the risk and effort.

I think the easiest way to achive this would be a ballscrew support/fixing block from zapp, and to mount this on the side that is not driven. This would mean buying to blocks at about £35 each plus modding the ballscrews. Total cost about £100 and two days work.

Out of interest which machine are you running now Michael?