If you are embedding objects to a surface, it's important to secure these items to the surface so that they do not float in the flood coat. It's also important to seal over them to prevent an excessive amount of bubbles from holding to or releasing from the object. If it is a paper product, you will need to protect the paper first so that the epoxy does not ruin the paper (see next FAQ). There are a number of ways in which you can do this.
1. Pour a thin seal coat on the surface. Assuming the seal coat looks good, with no imperfections that would need to be addressed, then you can place the object (bottle caps, patches, etc.) in as soon as the epoxy begins to tack/gel. This is normally 1-3 hours, depending on temperature. This will then tack the object(s) down. Again, if no imperfections appear, you could then pour the flood coat at 4-6 hours after the seal coat.
2. You could pour a seal coat and allow the epoxy to cure until the surface is hard. You can then use glue on the underside of the objects to secure them in place. If you wait longer than 12 hours between seal coat and flood coat, we recommend a light sanding. You can use 320 grit sandpaper to sand the surface. If you do sand, be sure to thoroughly clean the surface prior to pouring the next layer. We recommend Isopropyl Alcohol 99% (must be 99%) to clean. Once the surface has been sanded and the patches/bottle caps/etc secured with glue, you can then pour the flood coat.
Again, if you are using paper products, see next FAQ on how to protect them.
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