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Cycle rollers can be expensive, so here's how to make your very own, slightly flammable, set for less than $32/£20. Subscribe to GCN for more great tips: Here's how to make GCN's much sought-after rolling pin rollers. You can get all the materials for these for about a fifth of the price of normal rollers. Although rollers are great for training, we're not sure how great these ones are, so we'd really love to hear your feedback in the comments below! How would you modify and i