Digital fabrication- how to align each layer perfectly?

Hi, I am at the stage where I have to CNC these each of these layers in 6mm MDF. But I don’t know how to align each layer since there’s no aligning edge. What would be the most efficient and fast way of doing this? I have few more shapes to make on top of this.


Kym, seems like you would have make some register marks for each layer. Not fast or easy.—Mark

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wdym?

You’ll have to do something like add holes to fit dowels for alignment.

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is there any auto tool in grasshopper for example?

assuming the shape will be post processed, you could also make a tiny cutout or marking ear that is cut off later

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yeah, I think that’d be a better idea.