Hi,

I am considering building a custom built reprap like the ultimaker design the rods are in a different combination from the mendel, if you did not know. Firstly is that allowed? or is it like a copyright?
I think maybe the way they have the rods is a better design as they have better results from the mendel repraps imo.
What do you think?

RepRap and its derivative are all open source, so you are free to modify and add to the design in any way you like.

May I suggest though, that you start out building a regular Prusa V2 as your first printer, before you start experimenting. It's so much easier to build a custom printer when you have a working printer available to make the parts, plus you're going to need the experience you get from the first printer build.

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-Nudel
Blog with RepRap Comic

Sure, I think thats a good suggestion.
I would still like to hear what others think about the ultimaker design. Is it the mechanics which gives it great quality prints?

The printer I designed "Tantillus" uses the same type of mechanism as the Ultimaker. As well as the new printer from Tinkerine Studio called Ditto uses a very similar mechanism.

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