tag:blogger.com,1999:blog-2807403883562053852.post9035821233263791117..comments2024-03-27T08:40:31.785-06:00Comments on Clayton Cramer.: Today's Machining InsightClayton Cramerhttp://www.blogger.com/profile/03258083387204776812noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-2807403883562053852.post-12473163402150715122018-11-30T08:03:58.159-07:002018-11-30T08:03:58.159-07:00Will: I would rather have used 8-32 but the diamet...Will: I would rather have used 8-32 but the diameter is a bit large for this hole. (Really tiny.) There is less than a pound of force involved so load isn't an issue. The spiral flute tap makes a world of difference. I used three turns before backing out and never felt at risk, unlike the straight flute tap. My big problem is that I would like to use 1" long 6-32 socket head black oxide screws (for reduced reflection), and that combination of length, head, and finish seem not to be stocked. I may get stainless steel and use flat black paint after everything is put together.Clayton Cramerhttps://www.blogger.com/profile/03258083387204776812noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-63846044246895354322018-11-27T21:13:47.123-07:002018-11-27T21:13:47.123-07:00When possible, avoid the use of the 6-32 thread si...When possible, avoid the use of the 6-32 thread size. It is weak, and screws and taps break more readily than expected. 6-40 or 6-48 would be better. 8-32 is much stronger. In manufacturing, 6-32 is the most common size to fail. Unfortunately, designers don't consider this, as most don't actually work with their hands, and the hardware is commonly stocked.<br /><br />No more than 1 full turn before backing off to snap/clear chips. With a 6-32, I'd be inclined to hold it to 1/2 turn max. 3 turns is asking for trouble.Willhttps://www.blogger.com/profile/00722792638246578812noreply@blogger.com