Renewing
Certain resources are renewable in vanilla nodecore, including Lux and Lode.
Dirt
You can renew dirt by leaching Humus or by putting Humus next to Grass and waiting for it to spread.
Stone
You can renew Stone using Aggregate. To renew stone you need to let Wet Aggregate dry into Stone then you need to turn the Stone to Cobble and Pummel it with a Pick to form Gravel. After this you end up with Gravel and 4 Stone Chips. If you do this process twice you can pack the 8 Stone Chips into Cobble. This basically changes Ash into Stone.
Wood
You can infinitely renew wood. Trees can drop enough leaves to create around 1-2 humus or dirt nodes with some leaves left over. (Just wait for the leaves to grow fully.) (You can speed up tree growth by a bit if you pummel a growing node)
Pumwater
If you surround Stone in at least 4 Pumwater source nodes, eventually the Stone will melt into a Pumwater source.
Lux Cobble
You can create lux cobble by flowing Flux over the top of amalgamation. It can take several hours.
There is a possibly faster way to generate lux. You need to put amalgamation next to 2-3 flux source nodes. You might be able to use lux flow to finish the amount if it does not generate (You can create 2 flux source nodes with 15 lux).
Lode Cobble
You can create Lode Cobble by putting a Glowing Lode Prill on top of critical Lux Cobble and Pummeling. This will always at least break even, and on average will double the amount of lode you invest.