Depends on what kind of silk you are using. Silk really varies from really thin, to pretty thick. Also, I would look at how much the silk you chose ravels, as this varies also, but on the whole silk does ravel easily. I would try binding a scrap and see if it works. If not, I would use a light weight stablizer that you can set with low temperature. I wouldn't starch because you are likely to get spots on the the silk.