Reconstitute Dried Spackle

I found an old jar of Spackle that was hard and clumpy but rather than throwing it away you can make it as good as new in 30 seconds.

Add a liberal amount of tap water. The jar I had was about half full of dried spackle, I filled it to about 2/3 full with water.

Break up the dried clumps and mix it with the water just a bit. You won't reconstitute it but you just want to get it so the water isn't just pooled up on top.

Put the jar in the microwave for 20 seconds. After 20 seconds take it out and mix it a little bit more.

Put it back in the microwave for another 30 seconds. Afterwards take it out and mix it thoroughly. You should have a nice mixture of ready to use spackle.

If it's still too watery drain out some of the water and microwave it for one more round.