Proxxon FF 500 to CNC machine..

[Doddy]

It looks a little light-weight. But I'll not comment further on that - I expect you know your machine's limitations and are satisfied.

You'll notice that the FF500 is available as "CNC-ready", with the screws replaced with ball-screws and steppers. It's probably not surprising that Proxxon are not prepared to sell upgrade kits - I know from experience with a Sieg conversion that the original machine is (in my case) often finished by hand and dowelled - replacement parts most likely won't align / fit well without an amount of effort, which they won't want to underwrite an end-user performing.

Your challenge - if you're convinced you want to adapt your machine - is to understand how to undertake a conversion yourself:
* Understand the construction, particularly the XY table and traverse screws - understand how you'd approach removing those and replacing with ballscrews.
* Understand the column, and how you could remove and replace the screw with a ball screw.
* Understand that the above removes the ability to operate the machine manually (the efficiency of the ballscrew is such that you'd have to continuously lock the static axis).
* Design and construct motor mounts to couple steppers to each axis.
* Introduce limit/home sensors on each axis.

None of this is hard. But it does require an intimate understanding of the machine construction. If you're not happy to strip your machine down completely (apart from the spindle... for now) then I'd suggest this isn't a job you want to undertake. Be aware of the cost of this, and the value of the machine, and understand if the costs and effort are compatible, or whether it'd be easier/more cost effective to find a 2nd-owner CNC mill elsewhere.

Of course, there may be more useful information available on adapting this specific machine elsewhere - but that's for you to find.

My own experience - I've gone this route myself with a SX2.7 - it was an interesting and challenging project - I don't regret it, but I wouldn't argue that it wasn't perhaps the best approach.