Squished chain stays happy with results
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Using the throat of a Craftsman 17mm wrench I shaped a die to put dents in the chain stays of a touring frame. Shaped them to mimic what I see on my Miyata 1000. I silicone the die to the jaws of a vise and proceeded to successfully squish 3 times on the two stays. 2 for tire clearance and one for chain ring clearance.