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<p>[QUOTE="calcol, post: 3624418, member: 77639"]The softer they are the more likely a punch was used. Drill bits and hole saws can twist and deform soft materials and leave a ragged edge. I have a set of hole punches in my shop that we use on rubber and soft plastic sheet material. Range in diameter from 3-50 mm in small increments. Quick to use and do a great job. We've used the large sizes on material up to 5 mm thick and small sizes on material up to 15 mm thick. Pic below gives some idea of what they're like. My main set has more intermediate sizes. I also have a set of smaller diameter punches designed for thicker material.</p><p><br /></p><p>Cal</p><p>[ATTACH=full]971881[/ATTACH][/QUOTE]</p><p><br /></p>
[QUOTE="calcol, post: 3624418, member: 77639"]The softer they are the more likely a punch was used. Drill bits and hole saws can twist and deform soft materials and leave a ragged edge. I have a set of hole punches in my shop that we use on rubber and soft plastic sheet material. Range in diameter from 3-50 mm in small increments. Quick to use and do a great job. We've used the large sizes on material up to 5 mm thick and small sizes on material up to 15 mm thick. Pic below gives some idea of what they're like. My main set has more intermediate sizes. I also have a set of smaller diameter punches designed for thicker material. Cal [ATTACH=full]971881[/ATTACH][/QUOTE]
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