20枚 ブックボード 10 x 12.5インチ 80 PT 0.06インチ 厚バインダー ボード チップボード デザイナーブックボード クラフト 高耐久 チップボードシート 製本カバー

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This is no chipboard, and it isn't suitable to book covers. What you see in the image is not what you get. It is just thick cardstock, and far too flimsy for book covers. I had to return them back to amazon for a refund.

I ordered this and received 9 pieces not 20?

This product is incredibly sturdy, offering a solid and reliable feel. The material is quite dense, which speaks to its durability, but it can be a bit challenging to cut through. While it may not be the easiest to work with in that regard, its strength more than makes up for it. If I couldn't find another brand with similar quality, I would definitely buy it again. Despite the slight difficulty in cutting, I’m confident I could still make it work and would recommend it for its overall sturdiness.

These worked great for bookbinding. No warping