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loading 2nd material

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Hi all

I've upgraded a UM2 with two Olson Block hot ends and updated the firmware from Cura 2.1.x. However I cannot find any way of loading the 2nd material. How do I tell it to do this?

Any tips or pointers to resources for printing with two colours would be very welcome.

Thanks in advance


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I realise from reading this forum and other sources there will be issues.

As far as firmware goes i've come across  Ginge's Marlin Builder that includes the option of the second extruder but it also asks about the heated bed temperature sensor, I don't have the spec for this, where can I find it?



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