The Blue Lock Farm polisher (Polishing Furnace) unlocks once you reach floor 3 of your base. A pad then appears next to the NPC where you sell crates; buy the polisher there. Feed it your normal brown crates, pick up the shiny crates it makes, and sell them for about 30% more cash.
Quick facts
- Added in the September 21 update.
- Unlock condition: the 3rd floor of your base. Since September 28 the game notifies you when you can unlock it.
- Location: a pad next to the crate seller.
- Effect: +30% cash on polished crates, according to the developers.
- The polisher has its own upgrades, and they get expensive fast.
How to unlock and use the polisher
Reach floor 3 of your base
Keep expanding your base; the polisher unlocks with the third floor.
Buy it at the sell spot
Go to the NPC where you sell crates. A new pad appears beside it; stand on it to buy the polisher.
Feed it brown crates
Carry your regular brown crates to the polisher instead of selling them straight away.
Sell the shiny crates
Pick up the shiny crates that come out and sell them for extra cash. Players report it takes about a minute.
Polisher at a glance
| Question | Answer |
|---|---|
| Where | Pad next to the crate seller |
| Unlock | Floor 3 of your base |
| Cash bonus | +30% |
| Price | Not confirmed yet; scales with progress |
| Upgrades | Yes, each level costs more |
"Floor 3" means your base, not the Infinity Tower. Floor numbers in the Infinity Tower have nothing to do with the polisher.
FAQ
You have not unlocked floor 3 of your base yet. After that, the pad appears next to the crate seller.
About 30% more cash per crate, according to the developers.
Not confirmed yet.
No, it has expired. See codes.
Related
- What to do: the crate-selling loop the polisher boosts.
- How to level up: other ways to raise income.
- Weather: time your selling with 2x cash weather.
- Codes: current codes.
Last checked: September 28, 2026.