As in a KitchenAid food processor, an attachment that comes with it is a dough blade. Can that be used in place of a pastry blender when making pie crust?

I tried twice, to whip cream in my food processor but each time it just curdled.
The cream was cool (straight out of the fridge), and I used the proper attachment, whisking for the recommended two minutes.
Does anyone else have the same problem?

Thanks in advance.

I really want a small smoothie blender (not huge) because that’s really the only way i get to eat fruit. Also any good recipes not using exotic fruits?

I swear every time I use the one I have I feel deaf afterwards. My boyfriend says it’s because I bought the cheapest brand from Walmart. Is this true? In your experience what is the quietest make and model of a food processor? My BF says it’s the Ninja but I don’t like that one because it doesn’t slice, mince and shred. I want one that does everything.