When to chisel in Atlas of Worlds?

I used to chisel from t9 but everything seems to have gone up by one tier and map drops seem more frequent.So when do you guys start chiseling in this expansion?

I'd do it in reds, probably, you don't need chiseling for T9.

I chisel from T12+ and sometimes T11, but no lower. It's enough if you do rare maps...
So many times i got better mapdrops without chisel's :-)) So i don't 'waste' it on lower maps.
But everyone have to decide for her own when he starts to chisel maps.

Some one said only pack size affects map drops, not quantity or rarity.I don't know what to think about that but anyway thanks for your opinions!

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JKlupper wrote:

Some one said only pack size affects map drops, not quantity or rarity.I don't know what to think about that but anyway thanks for your opinions!

Quantity on the map affects map drops. Quantity on your gear does not. Packsize is "better" than straight quant, because it is effectively a multiplier for quantity. I chisel/Alch for Packsize and good quant rolls maps from tier 12+, and vaal 13-14+, and add sac frags to tier 15/16.