Which of the reprap clones has the largest build area?

Anyone know which one has the larger build areas especially the Z axis..

I was thinking on buying the rapman and replacing the z axis supports with double height rods and extra side supports..

I am after decent quality prints with a decent area with at least 260mm Z height without 2 much modding..

Another concern are the extruders ... which is considered reliable and accurate?.. I am after 0.25mm if possible.

Thanks

First off I think you mean derivative, a clone would be exactly the same as the original.

The Ultimaker has 210 x210 x210 and the height should not be all that hard to change. It also has provisions for dual extruders on the driver board and it fast.

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dammmmmmmmmmmmmmmmmmmmmmmm look at that ultimaker go....lol ... excellent.. you got any detail snaps of the prints... up close and personal plz!

I don't have one personally but I know the Ultimaker blog has a few close up pics. [blog.ultimaker.com]

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FFF Settings Calculator	Gcode post processors	Geometric Object Deposition Tool Blog
Tantillus.org	Mini Printable Lathe	How NOT to install a Pololu driver