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  • ed_h's Avatar
    02-08-2018, 12:09 PM
    In the woodworking part of my shop, I used to have power and dust collection from above. It worked fine, but made it sort of hard to manipulate...
    37 replies | 1452 view(s)
  • ed_h's Avatar
    02-04-2018, 12:19 PM
    I dont have the headroom in my garage for a lift, so I put in a pit. Uncharacteristically, I thought of it before the floor was poured, so no...
    69 replies | 2710 view(s)
  • ed_h's Avatar
    02-02-2018, 10:24 PM
    Agreed. There are a number of things you can optimize for. Minimum wall material--squarish; Maximum wall space--long and skinny (unless you are...
    69 replies | 2710 view(s)
  • ed_h's Avatar
    02-02-2018, 07:38 PM
    Ruling out cylinders and domes, the next best shape may be a square from a material standpoint. A square minimizes the wall perimeter for a given...
    69 replies | 2710 view(s)
  • ed_h's Avatar
    01-29-2018, 11:43 PM
    Put a course of 4" CMUs or a few courses of brick. Run your tiedowns through them and fill the voids. Ed
    23 replies | 1944 view(s)
  • ed_h's Avatar
    01-29-2018, 11:38 PM
    ed_h replied to a thread OT: Kind of a long train in General
    One of the important things that limits the weight (and thus the length) of a train is the strength of the drawbars (couplings) on the cars. Engines...
    37 replies | 2610 view(s)
  • ed_h's Avatar
    01-29-2018, 09:17 PM
    ed_h replied to a thread OT: Kind of a long train in General
    UP has run 200 car trains on selected routes. Logistics can be a problem since many sidings can't hold a train that long. Multiple power consists...
    37 replies | 2610 view(s)
  • ed_h's Avatar
    01-26-2018, 12:13 PM
    ed_h replied to a thread Electrolysis for rust removal in General
    Here's a guy who did a trailer frame by electrolysis. http://antique-engines.com/trailer-electrolysis.htm I'm set up to do electrolysis, but...
    23 replies | 1804 view(s)
  • ed_h's Avatar
    01-24-2018, 07:32 PM
    ed_h replied to a thread Electrolysis for rust removal in General
    At common temperatures, chemical reaction rates will approximately double with each 10 degC rise in temp. Ed
    23 replies | 1804 view(s)
  • ed_h's Avatar
    01-24-2018, 07:02 PM
    ed_h replied to a thread Electrolysis for rust removal in General
    I looked at some of his other videos and thought they were fine. I think he just got a little too far out of his area of expertise on this one. ...
    23 replies | 1804 view(s)
  • ed_h's Avatar
    01-24-2018, 03:26 PM
    ed_h replied to a thread Electrolysis for rust removal in General
    I got as far as him warning not to use baking soda because it would produce chlorine gas. With his credibility then down to zero, i didnt bother...
    23 replies | 1804 view(s)
  • ed_h's Avatar
    01-23-2018, 12:37 AM
    ed_h replied to a thread Nylatron? in General
    I believe Nylatron is a brand name for a molybdenum disulfide (MDS) filled nylon. McMaster caries it, but not necessarily under that trade name. ...
    20 replies | 1795 view(s)
  • ed_h's Avatar
    01-22-2018, 07:22 PM
    I second what JT said. I tried to use one of the cheap switchers to drive the wire feed on a MIG welder. Turned it on, and the motor would just jog...
    20 replies | 1696 view(s)
  • ed_h's Avatar
    01-18-2018, 10:39 PM
    ed_h replied to a thread Black antiquing fluid in General
    I order from England fairly often for some British vehicles I have, and i don't think they usually charge VAT for US orders. Even shipping, though...
    4 replies | 364 view(s)
  • ed_h's Avatar
    01-16-2018, 05:31 PM
    "Not real bright" by what yardstick? Ed
    79 replies | 6381 view(s)
  • ed_h's Avatar
    01-15-2018, 10:49 AM
    On the radio? Fine. More complex numbers? Fine. But this was bone simple numbers in a newspaper. Ed
    79 replies | 6381 view(s)
  • ed_h's Avatar
    01-15-2018, 01:21 AM
    Well, yes, that was sort of my point. They are writing for third graders. And it's not the "average person" we're talking about here. It's...
    79 replies | 6381 view(s)
  • ed_h's Avatar
    01-14-2018, 08:53 PM
    "Bail was set at $10,000. Smith would have to produce 10% of that amount to be released" carries all of the information. The "or $1000" is not...
    79 replies | 6381 view(s)
  • ed_h's Avatar
    01-14-2018, 12:11 PM
    Yes. Another example-- "Police found 2.2 pounds of marijuana in the back seat." More likely, the police reported finding about a kilo of weed. ...
    79 replies | 6381 view(s)
  • ed_h's Avatar
    01-12-2018, 01:44 AM
    My local newspaper apparently can't afford a dedicated science or technology editor. The stories they produce often create more questions than they...
    79 replies | 6381 view(s)
  • ed_h's Avatar
    01-11-2018, 09:32 PM
    I read this kind of thing a lot: "Bail was set at $10,000. Smith would have to produce 10% of that amount, or $1,000, to be released." The...
    79 replies | 6381 view(s)
  • ed_h's Avatar
    01-02-2018, 01:20 PM
    Interesting. What car?
    15 replies | 1123 view(s)
  • ed_h's Avatar
    01-02-2018, 12:43 PM
    Yes, me too. I only blast the exterior, and mask or plug any passages to the inside. I then blow, brush, and rinse before opening it up again. ...
    15 replies | 1123 view(s)
  • ed_h's Avatar
    01-02-2018, 04:05 AM
    No, I don't think paint is appropriate in that application. For the casting. it was just a light bead blast on the exterior and then fine steel...
    15 replies | 1123 view(s)
  • ed_h's Avatar
    01-01-2018, 10:32 PM
    Are you sure the carb bodies are aluminum? Many are zinc alloys that may contain some aluminum. In my experience, with some effort, you can get a...
    15 replies | 1123 view(s)
  • ed_h's Avatar
    12-29-2017, 08:33 PM
    I have less experience with nickle, but with zinc, stainless seems to work fine. I use titanium bars and wire, but haven't found a reasonable source...
    4 replies | 358 view(s)
  • ed_h's Avatar
    12-27-2017, 09:24 PM
    I used to work for a major US railroad, and that video and quite a few like it got passed around a lot. Camera lens and angle accentuates the track...
    9 replies | 1061 view(s)
  • ed_h's Avatar
    12-22-2017, 07:25 PM
    Chemical treatments (e.g. ER, Phosphoric, vinegar, etc) using paper towels as described will likely work OK with one caveat. The volume of active...
    35 replies | 1806 view(s)
  • ed_h's Avatar
    12-11-2017, 05:04 PM
    Ididnt have any luck selling my magazines a while back, but it was pretty easy to give them away. Ef
    10 replies | 1134 view(s)
  • ed_h's Avatar
    12-09-2017, 01:41 AM
    ed_h replied to a thread OT- physics question in General
    Yes, I'm pretty familiar with the academic definition of Applied Physics, but it didn't occur to me that someone would think that's what I meant. ...
    41 replies | 2674 view(s)
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