I'm glad you asked!
The Log Maker is one of the first items you receive in Supernauts, and it's your gateway to producing the raw material of Log Blocks, that you'll use as the foundation of so many other Blocks.
After you've put it somewhere safe in your World, tap on it to bring up a sliding scale, which you can then tap and hold to produce the quantity of Blocks you need.
Initially you can only make a small number of Log Blocks, but you can purchase upgrades to increase that amount. Be aware that when you make the upgrade, it'll take a significant amount of time.
It's worth upgrading the Log Maker fairly early so that you have constant access to raw materials, so that you can, in turn, continually be feeding your Wood Bots to make more elaborate materials.
Want more? Check out our 21 other Supernauts features!