"A small machine that quadruples the value of every tenth ore that passes through." (CURRENT DESCRIPTION)

"A small machine that QUADRUPLES the value of every 10th ore. Ore cannot be upgraded more than once. Doesn't upgrade ores worth more than $4,000." (OLD DESCRIPTION)


The Plasma Iron Polisher is an Uncommon-tier upgrader that upgrade ore with value by 300% (4x multiplier). As stated in its description, it only upgrades every tenth ore that enters it. This can be very useful, as 4x is a large modifier (matched by even Reborn upgraders), however it is not very effective because it will not upgrade all ores that enter; only 1/10. As a result, many players use multiple Plasma Iron Polishers to increase the chance of upgrading ores.

Even if an ore has already been upgraded, it will still count towards charging up this item for another ore that has not been upgraded.


  • It bears a resemblance to the Lunar Refiner, albeit being smaller.
  • The way this item works is similar to the Vampire Spore however, this doesn't multiply your ores by 1 half when looping and also this is once every ten ores instead of one hundred ores and it give you the first upgrade without charging it.