I take the paper off after each block or a few. I have purchased the foundation paper through MSQC and I like to use tissue paper from the gift wrapping sections in the stores. At craft stores you can buy large quantities and they usually come in 20"x20" sheets. Some range from 30-100 sheets. I also lightly score the paper and fold on the seam, It perforates the paper making it easier to tear off. My little niece comes over often and she likes to help so I save her some blocks. She'll say "I'm helping in the process, right? and I reply absolutely.