DEVASTATION...a lesson learned the hard way..

Today I decided to pull out my Cathedral Windows quilt that I started several months ago. I wanted to see how many white squares I had pressed and ready to go so I can start working on that again. 

To my HORROR, this is what I discovered on my completed blocks and one incomplete block.

this is the incomplete block, only the 4 windows on the right are sewn.

one of the completed blocks.

Look closely. See all the RUST spots! OMG! The block not completed was tacked with pins and on the edges, quilt binding clips. The completed block, the edges were tacked with pins.

I'm guessing it's the humidity here in RI. I'm not used to it, I don't know much about it being from California and never even thought that it would affect my pins and binding clips!

These are all the FRONT of it. At first, I thought, it will be ok....once I attach all these blocks together, I'll be putting windows over these and it won't show at all. No big deal.
WRONG... Here's the BACK!

 These are the 2 completed blocks that just had pins in them. Now these I think I'll still keep because this quilt it for me and the rust marks are small enough that they won't bother me too much.

These are the back of the incomplete block. Top one here shows all the binding clip damage, the bottom picture shows where I had pins holding the window to be sewn in. So needless to say, this block is getting trashed.

Here are some of the pins and clips. You can see the rust if you look close.

So here's my lesson learned (that maybe all of you already know!):
I will never have pins or binding clips "hold" my work for me and let it sit. Especially when using white fabric. And especially if I live somewhere where there is humidity!