overtyrant wrote:Is there an affordable 3d printer avaliable yet with a good resolution for terrain yet?
Depends on what your definitions of 'affordable' and 'good resolution' are?
Seriously though for circa. £300 - £500 you can get a Wanhao, a good enough and fairly reliable printer
IMO.
Then there are the Prusa i3 printers, the most up-to-date one available as a kit form from Josef Průša will cost £579 plus delivery from Prusa3d.com (the only kit one I personally would recommend) and as a ready made one from £789 + delivery.
Then we start getting to the circa. £1,000 range. We run 3 x Cel Robox 3D printers, a great 'plug n'play' printer, though the height of any build being restricted to 100mm is a little limiting, also it has its own software so some limitations there (it will not support Simplify 3D for example).
Also worth mentioning is the Zortrax M200 - new these can be found for circa £1,400, a great printer with some really novel (and handy) features.
The resolution part of your question is even more difficult to answer. But most terrain builds are done in either 100 microns to 200 microns. The above pinters will all do these with ease, with some of them having a resolution down to 20 microns.
The above list is not exhaustive by any means but based on what we use or have used. Perhaps the best bet for you is to visit some of the 3D printing forums, go into local stores (PCWorld for example) and see what they have available, or contact some online retailers directly and question them - they are usually very helpful. If going into a store see if they can show you different ones working and have a look at the machine printing and the results of that printing.
Please though unless you are a technical genius and enjoy tinkering with things like 3D printers to get them to work right may I suggest you steer clear of the bargain basement kit / DIY ones found on some well known auction sites.