Baking powder re***ds plaster it contain allum which is used in gypsum products to help setting times when I was younger when using carlite browning we'd have batches that would set rapid so we'd chuck baking powder in to slow it down.
And man up I'm nearly 50 and still do 3 30m2 gauges a day honest
And man up I'm nearly 50 and still do 3 30m2 gauges a day honest