Totally depends on the quilt. If it is a pattern I have made before and am certain of my choices, I go ahead and cut the whole thing. Many times I will cut all the block pieces but wait for the borders and binding.
If it is a new pattern, I will often cut as I need the pieces to make sure all is going well and I like what I am doing.
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My newest Grandson, Caleb Austin, was born May 29th. I am now Grandma to 4 precious babies. I am so blessed!!!!