On Saturday 13 August 2016 11:04:18 Dave Cole wrote: > If I could afford it, I would only own Cobalt drills. > > I use Cobalt drills when I need to make hundreds of holes. Then it > makes sense.
I do a lot of 3mm to 6mm tap drilling holes, or so it seems. I may see if I can find the suitable cobalt number drills in 5sies, like the #28 for a 4mm hole to be tapped. Its beginning to look like sensible replacements for the getting shorter all the time bits in this Hole Hog kit I bought a few months back. > But the T coated drills like the Ryobi drills work fine for general > drilling on hot rolled and cold rolled. > FWIW, Home Depot has put the 1/16 to 1/2" sets on sale for the last > two Christmas seasons for less than $20 per set. > I grabbed 6 sets on one trip. I'd grab 2 at that price myself. > Gene, your source of hot rolled must be bad. Although I forget how > fortunate I am as I am within 50 miles of two large steel mills and > several tube mills and two heat treat plants. I agree its bad stuff. Its chipped the edges off of 4 coated SC 1/4" mills so far, making these tapered gib clamps damned expensive. Steel locally is the pits with one exception. > There is a steel yard about 10 miles from my place that sells slightly > out of spec steel tube cheap and they also sell out of spec > structural. The tube mill is next door and owned by the yards brother. > :-) I found a busy machine shop in a back alley over in Buchannon that has larger stuff, and bought a cut off an inch thick and 3" wide & about 18" long. All I needed was to make the nut cage for the X screw I'll use in the Sheldon. A 1"x1"x1.25" piece. They would have recycled it but was happy to get my $5 bill. Looked like hot roll and it machined sweet. One less thing on the floor to stumble over till it was picked up at the end of the shift. They also had an OLD Sheldon turret lathe about 2x the size of mine. Smallest lathe in the place, 4 bigger ones (up to a 24" 16' RIGID) present, but none turning at the time I was there. 2 bridgeport mills & 2 bigger non-cinci's, but it looked like the present job was all plasma cut & being mig welded. That plasma cutter was doing a cut finish better than a bandsaw & very accurate. I'd assume one of the old trailers used for steel storage they had in the side yard may have had some suitable key stock. The 1" I got a piece of was thicker than any sheet stock I saw. Thanks Dave. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
