tag:blogger.com,1999:blog-2807403883562053852.post9044880602719056347..comments2024-03-27T08:40:31.785-06:00Comments on Clayton Cramer.: Machining SteelClayton Cramerhttp://www.blogger.com/profile/03258083387204776812noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-2807403883562053852.post-64206997633423977632016-11-13T18:11:33.378-07:002016-11-13T18:11:33.378-07:00Keenserts are functionally equivalent to what I us...Keenserts are functionally equivalent to what I use to use 3/8"-16 bolts in 1/2"-13 threaded holes.Clayton Cramerhttps://www.blogger.com/profile/03258083387204776812noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-42637310251377663892016-11-13T18:08:49.557-07:002016-11-13T18:08:49.557-07:00So drill out the hole large enough for the externa...So drill out the hole large enough for the external size of a Keensert with 1/4"-20 interior threads? A stainless steel set screw won't push the Keensert out of its threads. I notice the second prototype I used carbon steel set screws and even repeated insertion and removal caused no problems. If turn hot rolle steel does not work out the Keensert sounds like a good idea.Clayton Cramerhttps://www.blogger.com/profile/03258083387204776812noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-77348865497097080552016-11-13T16:05:03.203-07:002016-11-13T16:05:03.203-07:00I would try an insert instead of switching to a st...I would try an insert instead of switching to a steel component. A high strength steel threaded insert like a Keensert would probably give you more strength then you would possibly need. A Helicoil would improve the design, be something you could get at an auto-parts store, but it wouldn't be as strong.<br /><br />The ALCO Fastener site: ALCOA owns the Keensert title.<br />http://catalog.arconicfastenersandrings.com/category/keenserts-reg-<br /><br />Helicoils are more common, just not as strong. Lots of sources for themJames Gibsonhttps://www.blogger.com/profile/05049975540976175810noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-73632263315019715362016-11-13T09:48:57.500-07:002016-11-13T09:48:57.500-07:00Worlds of difference between machining Al and SS. ...Worlds of difference between machining Al and SS. Just about anything works with Al. Just about nothing works with SS. Unlikely to succeed through trial and error.<br /><br />Speeds, feeds and angles all matter. As does type of cutting fluid.<br /><br />http://www.mmsonline.com/articles/read-your-chips<br /><br />http://www.bssa.org.uk/topics.php?article=193Whttps://www.blogger.com/profile/16464836634888906831noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-73155170749066131532016-11-13T09:46:47.552-07:002016-11-13T09:46:47.552-07:00just to throw it out there, for consideration, if ...just to throw it out there, for consideration, if the durability of threads in aluminum is the only issue with your tool, you could tap it for, and then insert, heli-coil inserts. they're available in stainless and inconel(!), so you could get extremely tough threads without the trouble of cutting them yourself.Jay Kominekhttps://www.blogger.com/profile/10329111965764211579noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-53088056691936616872016-11-12T22:28:15.124-07:002016-11-12T22:28:15.124-07:00Aluminum alloys tend to be soft until they are tem...Aluminum alloys tend to be soft until they are tempered. An anodized coating can be harder than steel, but not the underlying alloy, even when tempered. (That would be Hard Anodize vs standard type.)<br /><br />7075 is better than 6061. If you have a choice, go with it. Tempered, for most applications, of course.<br /><br />BTW, anodizing can be had in any color, including clear. Willhttps://www.blogger.com/profile/00722792638246578812noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-38449837535346076492016-11-12T21:42:31.393-07:002016-11-12T21:42:31.393-07:00Stainless is tough to deal with on any level. It&#...Stainless is tough to deal with on any level. It's tough, and it's a lousy heat conductor meaning machining it is slow and difficult. I don't know what kind of tool you're talking about, but unless you need the corrosion resistance of stainless I'd try just about any other kind of steel. PhaseMarginhttps://www.blogger.com/profile/16631941929380901353noreply@blogger.com