What's new
What's new
By:
Advanced search…

Search results

  1. hvnlymachining

    1.25" x 4s Acme thread.

    I'd use HSS in that instance for more "meat" below the cutting edge, or good quality brazed carbide, depending on your tool provider.
  2. hvnlymachining

    Vintage Winch HELP w/ any manufacturer info/specs

    Looks like a very old, overhead lifting winch. Tens of thousands of different brands of winches have been made over centuries, many were war time brands that were built in just one large production run for a company name made just for that one run. ( For liability reasons) If it works, use it! I...
  3. hvnlymachining

    1.25" x 4s Acme thread.

    Pictures would be helpful here, also length of part and thread. What sort of "inconsistency" we need more information.
  4. hvnlymachining

    FS: Burnerd ED Multisize Collets, ranging from 3/8 to 2 inch

    You have a better chance of getting ahold of the OP by sending a private message since this thread is over a year old.
  5. hvnlymachining

    When does NET30 start?

    One more thing to consider, I have one very large corp that I do a fair bit of work for. They have me on net 10 just because the foreman pulled some strings for me. But, they also don't make any payments one month out of each quarter for internal auditing. They've also been three months behind...
  6. hvnlymachining

    That random phone call

    There's still a few of us sharpening them that way. Although I do prefer insert and spade drills when available.
  7. hvnlymachining

    That random phone call

    Yep, with 10 HP between them (actually they're worn down, but it'll handle 18"x4" stones.) I picked it up at auction years ago.
  8. hvnlymachining

    That random phone call

    They'd likely be fodder for my 18" pedestal grinder at my shop, I haven't had the fortune to get a big belt grinder yet. but yes they'd get heavy fast.
  9. hvnlymachining

    That random phone call

    That's beyond deburring! They need a re-cut first!
  10. hvnlymachining

    Possible types of steel for this bushing plus alternative recommendations

    1144 is much easier to machine, but definitely doesn't have better corrosion resistance! I run literally tons of 4140, and a few hundred pounds of 1144 annually, and stock both, but my work is primarily heavy industrial. In your situation either will be fine. And your machinist friend will...
  11. hvnlymachining

    Possible types of steel for this bushing plus alternative recommendations

    1018, 1144, 1045, 4140, A-36 or pretty much any other steel or semi steel could be used in such a location. Being just a sleeve they endure no real load of any kind. Having had experience with those and other ag adapters, the cheapest steel is used with a cheap coating to make them store shelf...
  12. hvnlymachining

    That random phone call

    Nothing leaves my shop without deburring, even bar stock gets a quick hit with a flap wheel or belt grinder. Way too much liability. Too often it's like handing a guy a knife blade when he's expecting a screwdriver.
  13. hvnlymachining

    Remove Large gear from shaft - damaged key

    I recently did a nearly identical job, but 3-7/16" shaft with a fully sheared key, made a couple rounds before coming to a stop. It was galled enough to require welding repairs to both the shaft and the coupler after disassembly. I was able to use some heat and a Posi-Lock model 116 puller to...
  14. hvnlymachining

    ID A vise screw, and help making an Acme Nut

    That's the kind of stuff a good machinist never throws out.... Way too hard/expensive to replace later. I've got a few myself. Also Acme inserts are easy to modify into specialty grooving tools if you have extra.
  15. hvnlymachining

    Chrome rod v. Steady rest

    I made UHMW inserts and caps for my various steady rest pads. A tad bit of high pressure grease and a chip shield. Never had even a slight scratch on a rod. Holds solid during heavy passes too. I use these pads for any finished surface, they work great!
  16. hvnlymachining

    Rotary Broach - 3/4" Hex?

    Yep, milled then ground. I've also found worn out HSS end mills to work quite well for custom tooling. I just turn off the remaining flute in the lathe first, usually.
  17. hvnlymachining

    Rotary Broach - 3/4" Hex?

    Out here alloy selection is poor unless you don't mind freight costs..... I have used limited 12xx but there's not much of it stocked around here and I don't use it enough to stock it myself. I'll definitely keep it in mind though! Thanks for your input. As far as the home brew broach...
  18. hvnlymachining

    Rotary Broach - 3/4" Hex?

    I had an opportunity to choose the material for a job requiring rotary broaching in both ends of a socket, 3/8 square/ 12T-1/2" spline. I ran a 1018/1144 comparison and found the 1018 required much less force for broaching, the finish was also much nicer in the 1018. I made my own broaches...
  19. hvnlymachining

    Variation in 1018 steel causing issues with insert drill

    Heat treat oven, similar to the hardening process. On the alloy, check your local scrap metal buyer, the yard I sell to has an XRF analyzer and can give an alloy analysis with incredible accuracy. I had them check a shaft for me before I welded it. $20 and knowledge of what I was up against...
  20. hvnlymachining

    Army surplus trailer for machines

    A local mechanic has had one for years, it does have drop down sides and a nice low bottom, but he only ever used it for storage to keep things off the ground that I know of. As I recall he purchased it for hauling something that didn't pan out. And yes, the tires are odd sized super singles...

ABOUT PRACTICAL MACHINIST

With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. Register for the world’s largest manufacturing technology forum for free today to stay in the know.

Learn more about us.

STAY CONNECTED

Facebook Instagram YouTube LinkedIn Pinterest Twitter Tiktok

Register Become a forum member. Register today.

Sign Up Sign up for our e-newsletter.

© 2024 Copyright Practicalmachinist.com. All Rights reserved.

Back
Top