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  1. racookpe1978

    New NiCd battery in small appliance, internal charger/inverter. Should I discharge it, then fully recharge for best long-term performance?

    Purchased a new NiCd razor. It has an old-style external (1.5 volt DC wall plug-in/cheap Chinese) charger/inverter. No apparent "controller" or regulator like the more modern LiOH batteries and regulators. Will I gain anything useful by fully discharging it to 0.0, then recharging? Or just...
  2. racookpe1978

    H2S release kills 1 at PEMEX Houston Refinery

    Liability and the "pursuit of accountability" might be difficult: "Pemex took full ownership of the Deer Park refinery in early 2022, acquiring Shell SHELL's stake in a refining joint venture. Mexico had acquired the facility to become more self-sufficient in gasoline and diesel." The Mexican...
  3. racookpe1978

    Weld-o-let on elbow

    An open question about pipe supports in that 3D image. How is the sliding small pipe support under the 1 inch (1/2 inch ?) pipe coming off the bottom of the large elbow expected to "only carry" the small weight of the 1 inch pipe? Would not the massive weight of the large pipe and its...
  4. racookpe1978

    SpaceX Starship missions

    I was told on a different thread on www.freerepublic.com that the excess fuel was burning off while being "drained" out the bottom of the stage by gravity after landing (being caught in the twin arms). Disconcerting to see open flames after a landing - Certainly NOT what I expect after an...
  5. racookpe1978

    Weld-o-let on elbow

    I share Little Inch's reservations about the access to the large flange nuts and bolts for removal (of the bolts/studs) and torqueing of the nuts. (Add access and torqueing of the small flange nuts and fasteners too.) To resolve assembly and maintenance concerns, move the fitting out towards...
  6. racookpe1978

    3/8-24NF Threads Rusting in an Outdoor 0.226 wall Galvanized CS Clamp. Should I Coat Threads?

    From McMaster-Carr. Thread Drill Bit Plug Chamfer Size Lg. Overall Lg. Size Decimal Size Equivalent No. of Flutes Thread Type Pitch Dia. Limit Each Uncoated High-Speed Steel 3/8"-24 1 1/4" 2 15/16" Q 0.332" 4 UNF H11 2535A35 $12.73 Ordered.
  7. racookpe1978

    3/8-24NF Threads Rusting in an Outdoor 0.226 wall Galvanized CS Clamp. Should I Coat Threads?

    Closer view. https://files.engineering.com/getfile.aspx?folder=d9f2df91-1b7b-47d0-950f-03f62813c816&file=Setscrews_As-Rusted_4.jpg
  8. racookpe1978

    3/8-24NF Threads Rusting in an Outdoor 0.226 wall Galvanized CS Clamp. Should I Coat Threads?

    Received the Loctite 222 as recommended. Is squirting phosphoric acid into the 3/8 tapped holes recommended, or "bad idea", to convert the rust before threading the new setscrews? https://files.engineering.com/getfile.aspx?folder=81ad5c87-6038-4d1d-8301-e0ab4f955d45&file=Setscrews_As-Rusted_2.jpg
  9. racookpe1978

    Removal of rust inside improperly stored 6" steel piping

    As concerning as the external (visible) general rust and untreated corrosion is, - and the near-certain probability that "several specific points" with the internal corrosion on the salt-water "puddles" deep in the bottom and the sagging middle of the three or more of these pipes have locally...
  10. racookpe1978

    AutoCAD: How do I stop OSnap defaults from overriding @(relative x, y) coordinates?

    Accurate, helpful info. My symptoms match the (Default, or "Incorrect For Me") setting for this Setting. I will reset the value. From your link, the following is repeated: OSNAPCOORD (System Variable) Controls whether coordinates entered on the command line will override running object...
  11. racookpe1978

    Mistakes on this weld work

    The weld was made with NO PREP and without removing the paint from either surface. SO the interior of the weld is well, "as good as the burned paint inside the weld". A mark of the lack of quality: The weld slag was not removed after cooldown. So what ever is there still cannot be looked at...
  12. racookpe1978

    Ordering socket weld flanges

    I am going to (reluctantly and rarely!) disagree with all of the above. For ANY FLANGE, you MUST order by ALL of the following: Nominal diameter Material (and sometimes with certification papers) Type of flange and Flange face: RFWN, RFSO, RFSW, FFWN, API style, etc Class or "Pressure...
  13. racookpe1978

    Unknown Item

    Aluminum tube frames - perhaps 1 x 1 hollow. Velcro attachment method. So, a lightweight item is being positioned. Probably not a welding jig or fixture, but a #D adjustable "assembly jig" nonetheless for a 18 inch x 18 inch x 18 inch assembly that needs to be re-positioned regularly...
  14. racookpe1978

    AutoCAD: How do I stop OSnap defaults from overriding @(relative x, y) coordinates?

    Snap is "off" Grids are "off" OSnap defaults are Cen, End, Insertion point (for blocks), Intersection. I really don't want to continually change these either. But. When I run a line (or dimensions, or move a point to a new point) particularly when in a complicated area with a lot of...
  15. racookpe1978

    3/8-24NF Threads Rusting in an Outdoor 0.226 wall Galvanized CS Clamp. Should I Coat Threads?

    Thank you. Why was my assumption that the (slightly more expensive) SSTL setscrews incorrect? Or simply not needed compared to sealing the threads chemically?
  16. racookpe1978

    Hi, What is the meaning of the c

    I can't find find that specific weld symbol in a Google search, but this diagram from the AWS comes the closest to your image: https://app.aws.org/mwf/attachments//84/250684/contoursymbol.jpg It would probably be a grind flush flat finish (though a machined finished should have an "M"...
  17. racookpe1978

    Nominals for steel plates

    You need to continue to find the answer to several equally important, if not more important questions: Yes, "What is my minimum calculated thickness, with the correct corrosion allowance and Safety Factor for your company and your application/industry, at the minimum commercial margin? Yes...
  18. racookpe1978

    3/8-24NF Threads Rusting in an Outdoor 0.226 wall Galvanized CS Clamp. Should I Coat Threads?

    I have 4x 3/8 dia carbon steel setscrews holding each of 13 CS rings in place in an outdoor setting. (Low stress, but the surface rust and subsequent streaks are irritating.) The CS centerpost itself and the 13x rings are spray galvanized with a commercial topcoat, and the rest of the post...
  19. racookpe1978

    Boeing again

    When the Space Shuttle Booster O-rings failed - and I know there were several "near miss" failures before the fatal burn-through - were these failures at the lowest O-ring joint because that was exposed to most burning gases the longest (since it was closest to the exhaust itself)? Or were the...
  20. racookpe1978

    Starliner FINALLY made it to orbit with a crew

    Now, about those pay bonuses for "test flight hours" that are owed to the two test pilots. And the OT pay for every hour up in space after the original planned return. 8<)

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