I just started to NOT use the ash pan.
I get longer, better, consistent burns with a layer of ash in the Oslo.
So far, I find it easier to shovel ash every few days to get a more consistent burn. Using the ash pan, I found myself waiting a few days for a layer of ash to build up.
I did like the ash pan in my VC encore though. Cool handle that covered the pan to prevent spillage. Too bad the door on it rarely sealed correctly without manipulation and cursing.
Interesting. I can tell when my ash pan is full on my Oslo because the stove will not perform as well. My old Dutchwest cat seems to like some ash in the pan.
The large pan was one of the features that sold me on the Oslo and I would hate to be without it. I do not like to rekindle fires and when I burn 24/7 it is so easy to dump the pan every third or fourth day.