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ER40 Collet Wrench
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An ER40 collet wrench/spanner. Useful in a pinch in place of a proper metal one for tightening ER40 collet chucks, tool holders, collet blocks, etc. Printed in PETG this wrench has enough strength and a long enough lever arm to provide enough clamping for most applications. Since 3D printers and materials vary some tuning (scaling) may be required to get a good fit on the collet nut.
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