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@cerpin
I’ve found the same thing, Pig Iron and Birdium are a pain to accumulate – my strategy has been to use the Lab to get as many gems as possible and use these to buy any missing materials when I start a new upgrade.
@optimuspig – the vast majority of the Energonicons are pretty useless, I would recommend using Glassor though as it destroys pretty much all blocks etc, and these are where you tend to get the material gift boxes.