How do I craft Master Circuit in No Man's Sky?

To craft Master Circuit, you need Magnetised Ferrite x10. Use the Crafting Menu to combine them.

What ingredients do I need for Master Circuit?

You need: Magnetised Ferrite x10.

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Master Circuit is a technology item in No Man's Sky. To craft it, combine Magnetised Ferrite x10.

Crafting menu

I needMaster Circuit

Craft 1: 10 Magnetised Ferrite.

The control circuit for all the other components in the device. Damage to this circuitry is fatal.