I like to buy my small drill bits and end mills from Drill Bits Unlimited. These are resharpened bits from the pcb industry. You can buy a box of 50 at a time cheap.
https://drillbitsunlimited.com/default.aspx -- Ralph ________________________________________ From: gene heskett [ghesk...@shentel.net] Sent: Sunday, December 18, 2022 9:50 AM To: Enhanced Machine Controller (EMC) Subject: [Emc-users] Sharpening teeny drill bits CAUTION: This email originated from outside the Walla Walla University email system. Greetings all; As many of you know a drill Dr is the bees knees, for drill bits above 6 or so mm, but a disaster for smaller bits due to the tolerances of the stamped and plastic chuck giving you lop sided grinding. AKA BIGGER holes. So, what jig or machine do you all use to sharpen drill bits in the below 5mm categories? Or should I gently spiral down a 1/16" SC mill, but that runs out of DOC long before it reaches thru a 20mm square CF tube. I've about 35 such holes to drill in 1mm thick wall CF, 8 of which need to go all the way thru both sides of the tube. Those will all be thread clearance for 3mm screws, but 8 of them will need to be for a 3mmx.5 tap, in 4.1mm thick alu. CF will no doubt be hell on drill bits, so it (or they) will need resharpened frequently I expect. Thank you, stay warm and well everybody. Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgeneslinuxbox.net%3A6309%2F&data=05%7C01%7Cralph.stirling%40wallawalla.edu%7C70d2642f582949c482e708dae12054f8%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C638069826264914128%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=jLId3drajwd8MB%2Bb%2F%2Fe6NwVRlnCOw68OMHsnpO1fuuY%3D&reserved=0> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=05%7C01%7Cralph.stirling%40wallawalla.edu%7C70d2642f582949c482e708dae12054f8%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C638069826265070361%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=ktyDgbVaR8MyVUNTwnmcS10xCvzrUip79B%2BcySO2s2E%3D&reserved=0 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
