Copper Grinder vs Grindstone

[Nsuidara]

Hello!

Question is simple...
When i made bonemeal in Grindstone -> +2% +3%
2% -> 5% -> 7% -> 10% -> 12% -> 15% -> ... -> 100%
is for me horrible slow

so, Copper Grinder how fast work ?
because i don't know made this tool or not... cost is BIG for me :/

[NeiroShop]

Its worth it.

[TomBarry]

The copper grinder is twice as fast. So bonemeal takes twelve seconds on the grindstone and six seconds on the copper grinder.

[Bjebr]

Its worth it.

And John C. said once that "Copper Grinder has bigger and better uses in the future which is why its mats are higher."

No idea if it's still on the agenda or already ingame for some dark thing i didn't try.

Bjebr