This is Jimstone.is 's theory.

1. The shots are not vaccines, instead they are GMO shots that program your body to rob it's blood of iron and build with that iron. I have not seen anyone else state even step 1 elsewhere yet, but this is the reason for the clotting, it is not the spike protein. Whatever the body is being commanded to do by the shot to get the iron out of the blood is being seen as an attack by the blood that is causing clotting. Blood clots when it detects an injury, it is how it blocks a vessel to stop bleeding.

2. Once taken from the blood, the iron is somehow transported back to the injection site where it is transported across cell membranes that normally won't accept iron, but it is being accepted. I do not know how this could possibly be done, but it is being done.

3. Once the iron is inside the cell, another aspect of the vaccine - possibly the spike protein - is assembling the iron into crystals that span the entire length of the cells and it is doing it without killing the cells. I had assumed an extra-cellular structure was being built but today I came across something that indicates that the structures are being built inside the cells themselves, all the way to the epidermis just under stratum cornicum which puts the magnetism right on the surface, and that's what the magnets are sticking to.