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Armeg 12 Days of Christmas giveaway
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<blockquote data-quote="Armeg UK" data-source="post: 456814" data-attributes="member: 18568"><p>I have many conversations with customers about using hole saws in metal seeing as the poor hole saw is the most abused power tool accessory there is.</p><p></p><p>The recommended speed for drilling into mild steel with our 20mm CVP hole saw is 425 RPM. Most of the people I speak to run them at the higher speed range on a combi drill which tends to be 1800 RPM. So they are running them at 4x the speed they should be. Most of them also do not use any sort of cutting oil/compound/paste etc. (mainly because they don't want to clear it up afterwards).</p><p></p><p>What kills most cutting tools (regardless of what material you are drilling) is heat. By running an accessory at the recommended speed using the recommended cutting coolant you are minimising heat build up and therefore maximising the life of the accessory.</p><p></p><p>Perfect example - I tested our CVP hole saw in stainless steel (whole different subject <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> ) and using at the correct speed with the correct coolant I managed to get 100 holes. Using at high speed with no coolant, I didn't even manage 2 holes.</p><p></p><p>Phil.</p></blockquote><p></p>
[QUOTE="Armeg UK, post: 456814, member: 18568"] I have many conversations with customers about using hole saws in metal seeing as the poor hole saw is the most abused power tool accessory there is. The recommended speed for drilling into mild steel with our 20mm CVP hole saw is 425 RPM. Most of the people I speak to run them at the higher speed range on a combi drill which tends to be 1800 RPM. So they are running them at 4x the speed they should be. Most of them also do not use any sort of cutting oil/compound/paste etc. (mainly because they don't want to clear it up afterwards). What kills most cutting tools (regardless of what material you are drilling) is heat. By running an accessory at the recommended speed using the recommended cutting coolant you are minimising heat build up and therefore maximising the life of the accessory. Perfect example - I tested our CVP hole saw in stainless steel (whole different subject :) ) and using at the correct speed with the correct coolant I managed to get 100 holes. Using at high speed with no coolant, I didn't even manage 2 holes. Phil. [/QUOTE]
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