Hello everyone. I'm new at "DIY 3D printer" stuff and I would like to

3D Printing
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1

Hello everyone. I’m new at “DIY 3D printer” stuff and I would like to ask you a question about what design it should have. I want to build a 3D printer/CNC combo machine but that damn design is a problem here. First I taught that I should make something like a regular 3D printer ( the printing head moving on 2 axis and the bed on third) but an issue appeared… is it ok to bring 1kg of wood or aluminium that high? (I want to build something quite big). After few research I’ve found this: https://www.youtube.com/watch?v=Dt7uyuZ4DJA . The problem with this design is the fact that it double the space required with at lest the printing height and I don’t even know if the NEMA 17 motors that I have can handle the weight of the CNC drill.

Can anyone give me some ideas ? But please, don’t say something like build 2 different machines because this is not an option.

Thank you for your time.

2

I assume the less weight you add on the X axis the weaker the Z will need to be. But I assume as well, if you have a strong-enough axis will be ok.

Other stuff will be changing the center of mass of the build, so the top will weigh more and maybe it will increase vibration of the whole thing so, maybe some corner plates will be needed to reduce wobble in the bottom part

3

This is really a bad idea. CNC and 3D printers expect both completely different things from movement and frame, mostly these things are opposite. CNC machines need to be sturdy thus making them slow but powerful. 3D Printers need to be fast and lightweight (in order to reduce backlash etc). Also CNC machines do not need much height in Z axis.

You should really make two different machines.