How thin to mix drywall joint compound

I've gotten a lot of good tips on the procedure for plaster crack repair, but no one has said anything about the consistancy of the mud. I've been mixing it with a consistancy of peanut butter (creamy, room temperature peanut butter to be more precise!) for the initial layers, but was wondering if a little thinner would be better for finishing layers.
I'm using Hamilton's 40 minute Smooth Set Lite.
TIA
Ed
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Thinner is a little better for the final layer. I like to put it on with a paint roller which is really fast. I don't put it in a roller like paint, but I just plunge the roller right in the bucket of compound. They make pads for the corners too, which is really fast as well.
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jagerEd wrote:

Good move on the Hamiltons. You must have some confidence to use a 40 minute mix LOL.
Thin it with a little water a little looser than your peanut butter consistency.
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