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TheCrey
is it possible to just make the printer higher ? I mean i have some 100cm rods here, could i just scale it higher without any issues ?
RichRap's blog has your answer:
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RichRap
"Is 3DR scale-able?" Yes, easy to go taller, just needs some thought about rod length. To go wider you will need to consider rod sizes. I always intended to be able to insert another printed part (spacer) and a new bigger middle triangle to get an overall bigger build area with the same parts. I actually wondered about keeping the size smaller to start with and doing extensions that could be printed out in order for it to be able to self reproduce, but that was getting messy.
And to the person who asked me if it's possible to make a Delta printer 3 Meters tall - YES!, Oh yes!, you can and if you build one (or want me to make you one) - please let me know :)
The only consideration is that you may have stiffness problems if you make it too tall. Theoretically the height isn't constrained, though you may have to reduce print speed to reduce printer wobble at taller heights.