tag:blogger.com,1999:blog-1592992209402300549.post98439869699568411..comments2024-03-28T08:06:43.198-04:00Comments on The Silicon Graybeard: Update on the 1 by 1 - Part 25SiGraybeardhttp://www.blogger.com/profile/00280583031339062059noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-1592992209402300549.post-61546349177644785612022-05-01T10:19:49.248-04:002022-05-01T10:19:49.248-04:00It's a good approach. I should get something ...It's a good approach. I should get something like that to do test cuts on. SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-36993523523127855902022-05-01T10:18:00.800-04:002022-05-01T10:18:00.800-04:00The way I think I do it is to drill the entire len...The way I think I do it is to drill the entire length for the tap, tap the entire hole and then use a drill bit to enlarge the hole in cap getting cut off by drilling halfway in depth. It will remove the threads I just cut in the cap. When I cut that off, I cut off the triangular point from the drill tip, leaving a larger piece diameter in the cap and a threaded hole. This way, I do it all in one setup, one set of X, Y, Z = zero, rather than possibly have the drill hole centered differently. <br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-26016849080103901792022-05-01T09:23:33.170-04:002022-05-01T09:23:33.170-04:00Dunno if this suggestion is worth anything, but wh...Dunno if this suggestion is worth anything, but whenever I have a complex series of cuts to do I make the first part out of hardwood or HDF to prove that the programs are right. Materiel is cheap, and generally it's hard to break anything.Malatropehttps://www.blogger.com/profile/12187333180472067677noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-53200037560076982852022-05-01T00:37:00.554-04:002022-05-01T00:37:00.554-04:00As simple as a Connecting Rod appears to be, they ...As simple as a Connecting Rod appears to be, they are actually quite bit more finnicky and sensitive to imperfections than most people would believe even possible.<br />The epoxy trick would seem to be a dream come true for making a matching set of Con Rods. After you get the Big End cut, drilled and tapped, then you bore it and hone it to final size with the caps torqued to spec is my understanding.<br />Looks like lots of chips have been flying SiG.<br />Good onya.Philhttps://www.blogger.com/profile/15695733883033137146noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-78937151593353704812022-04-30T23:15:50.853-04:002022-04-30T23:15:50.853-04:00SiG (again):
Actually, it has been too long since...SiG (again):<br /><br />Actually, it has been too long since I was fooling with this stuff. Now that I think of it, you should only be tapping the larger (lets call it the "body" part of the connecting rod, and the hole thru the "cap" will simply be a body-sized hole for the 5-40 screw with no threads. Yeah, I have it right now. Drill the tapping sized holes, cut apart, tap the body and ream the cap holes out to the 5-40 pass-thru size. <br /><br />OK, I'll leave you alone now. No more kibitzing.The Neon Madmanhttps://www.blogger.com/profile/09471284462048509853noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-4167032578183570312022-04-30T23:08:59.348-04:002022-04-30T23:08:59.348-04:00SiG:
Don't you have to tap AFTER cutting the ...SiG:<br /><br />Don't you have to tap AFTER cutting the connecting rod apart? Seems to me that you can drill first, but that if you tap them after the cut the threads will not line up between the upper and lower parts. The upper and lower threads will not "sync" because you have cut a .050 gap out of them.The Neon Madmanhttps://www.blogger.com/profile/09471284462048509853noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-10208680465320947972022-04-30T22:38:43.289-04:002022-04-30T22:38:43.289-04:00You've got it! The raised area on the big end...You've got it! The raised area on the big end isn't really circular, it's elongated in the middle. There's an extra 0.050" piece in the middle that gets sliced out once I drill and tap the big end for two #5-40 cap screws. Once I've sliced that out, I put in the screws, clamp it closed and then drill and ream the big end to 3/8" dia. SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-9935385141793483532022-04-30T22:18:38.089-04:002022-04-30T22:18:38.089-04:00By God, You've made a connecting rod! I'm ...By God, You've made a connecting rod! I'm assuming the one for the 1x1 has a split "Big End", and uses cap screws to hold the cap to the rest of the rod?drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.com