@clanmac I have to say looking at the stellar conversion work you're doing on your Facebook page that you would absolutely benefit from owning a 3D printer. I've only had a 3D printer in my toolkit for just over a year and it has become the source of probably 80% of my wargaming terrain (I still buy the odd laser-cut building kit). They're even more useful if you're willing to teach yourself a CAD tool like Autodesk Fusion 360 (which is free for hobbyists), or Blender.
To be honest I think any wargamer that builds their own terrain would find a 3D printer an invaluable tool. I'm also convinced the market will move more and more towards this technology in the future - particularly as FDM (for terrain) and SLA (resin for figures and high detail small parts) become cheaper.