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  • darryl's Avatar
    Today, 02:48 AM
    darryl replied to a thread coating on brass in General
    Well I got my answer- muriatic acid is eating it right up! At first it didn't seem to be doing anything, so I left it for a while, then gave it a...
    6 replies | 272 view(s)
  • darryl's Avatar
    Today, 01:47 AM
    darryl replied to a thread coating on brass in General
    Hmm- I just remembered the Cole Parmer chemical compatibility chart, so I looked up polyurethane and sulfuric acid. It said 'severe effect', so -...
    6 replies | 272 view(s)
  • darryl's Avatar
    Today, 01:12 AM
    darryl replied to a thread coating on brass in General
    Yes, I think it is a urethane, not an epoxy- the smell is similar but not quite the same.
    6 replies | 272 view(s)
  • darryl's Avatar
    Today, 01:00 AM
    darryl started a thread coating on brass in General
    I have some brass that I've cut up for use in electrical contacts. It started life as a decorative piece for a kitchen or vanity, so it came with a...
    6 replies | 272 view(s)
  • darryl's Avatar
    03-25-2017, 12:36 AM
    Constantly driving the carriage with the lead screw would drive me nuts. As far as the hand wheel that drives through the rack, I removed my hand...
    30 replies | 1134 view(s)
  • darryl's Avatar
    03-24-2017, 04:12 AM
    darryl replied to a thread How to test Treadmill Motor in General
    Some of those motors are able to turn with just a few volts. That could be as low as 3 volts, or perhaps up to about 7 or 8 volts would be needed to...
    39 replies | 1683 view(s)
  • darryl's Avatar
    03-23-2017, 01:54 AM
    darryl replied to a thread How to test Treadmill Motor in General
    Pretty easy to test. The motor will have the main wires, plus possibly some sensor wires or maybe a thermal cutout. With no wires connected to...
    39 replies | 1683 view(s)
  • darryl's Avatar
    03-19-2017, 07:49 PM
    Bore it out and use JB weld to secure a nyloc nut inside it. The other thing I like to suggest is to cut a sacrificial nut in half and clamp it back...
    25 replies | 927 view(s)
  • darryl's Avatar
    03-19-2017, 02:31 AM
    I do not have a mercury mirror, nor do I know of any near here. I was referring to projects I've read about and seen pictures of. I don't recall...
    12 replies | 600 view(s)
  • darryl's Avatar
    03-19-2017, 12:24 AM
    Spinning liquid in a horizontal plane does produce a parabolic surface. My first attempt made a very shallow curvature, so it's hard to tell, but...
    12 replies | 600 view(s)
  • darryl's Avatar
    03-18-2017, 03:22 PM
    Was thinking again about doing some spin casting to produce a parabolic surface. Normally I'd be using a resin of some kind, probably epoxy, and...
    12 replies | 600 view(s)
  • darryl's Avatar
    03-17-2017, 10:58 PM
    Some days I try to exit the shop quickly so I don't get caught up in the 'gotta clean up this mess' syndrome. :) At work I try to clean up often...
    30 replies | 1742 view(s)
  • darryl's Avatar
    03-17-2017, 04:32 AM
    darryl replied to a thread using welder to power motor in General
    I think you'll find that the welder can't be left powered for extended periods of time without getting hot, even with low or no load. It's not even...
    13 replies | 835 view(s)
  • darryl's Avatar
    03-16-2017, 08:55 PM
    You can measure using the white as common and get -24 on the black and -12 on the red, but you can't use the black as common and see +12 on the red...
    30 replies | 1283 view(s)
  • darryl's Avatar
    03-15-2017, 08:52 PM
    Potentially the black would be ground. The two whites together might be nothing more than two 24 v wires leading away to the original application....
    30 replies | 1283 view(s)
  • darryl's Avatar
    03-13-2017, 08:27 PM
    Thought about the original question a bit more- now I realize that if auxiliary power of some sort is driving one half shaft, and the engine is not...
    25 replies | 1180 view(s)
  • darryl's Avatar
    03-13-2017, 03:22 AM
    I don't have a particular goal in mind, but perhaps a useful thing would be able to bring the vehicle from stopped up to say 50 or 60 k on the...
    25 replies | 1180 view(s)
  • darryl's Avatar
    03-13-2017, 12:26 AM
    A few days ago I started wondering about how to add auxiliary power to a front wheel drive vehicle, say electric assist. You could add something to...
    25 replies | 1180 view(s)
  • darryl's Avatar
    03-10-2017, 08:57 PM
    darryl replied to a thread method for making a dome in General
    Thanks everyone. Some good ideas here. I like the layout for the geodesic dome, thanks Evan. The rounded hexagon looks to be what I'll need for this...
    30 replies | 1980 view(s)
  • darryl's Avatar
    03-09-2017, 03:07 AM
    I'm building a model of a planet- basically a half sphere. There are many ways of going about this- blow up a balloon then cover it with paper mache...
    30 replies | 1980 view(s)
  • darryl's Avatar
    03-09-2017, 01:43 AM
    I can hardly wait to see how Buckleys Mixture is made-
    9 replies | 1040 view(s)
  • darryl's Avatar
    03-05-2017, 02:18 AM
    Maybe get a nice piece of stainless sheet, cut it to fit, and silicone it on.
    24 replies | 1230 view(s)
  • darryl's Avatar
    03-04-2017, 08:46 PM
    I gather that there isn't a control pot in there to set the sensitivity-
    28 replies | 1957 view(s)
  • darryl's Avatar
    03-04-2017, 08:41 PM
    darryl replied to a thread Metal in a microwave? in General
    You might find that just winding a helical coil of wire won't do much- but if you short the ends together it could vaporize. Part of the equation is...
    16 replies | 1227 view(s)
  • darryl's Avatar
    03-02-2017, 08:47 PM
    Back to the MPPT vs charge controller- I'm thinking there would be little benefit to using an MPPT controller if you're using a panel that's rated at...
    41 replies | 2347 view(s)
  • darryl's Avatar
    03-02-2017, 02:19 AM
    One question I have is whether there is an MPPT controller that can take much higher voltage and translate it into higher charging current. In this...
    41 replies | 2347 view(s)
  • darryl's Avatar
    02-28-2017, 12:45 AM
    darryl created an album my image postings
  • darryl's Avatar
    02-26-2017, 03:32 PM
    darryl replied to a thread OT: Dymo1000 labels in General
    I did a project once where I made my own front panel by casting epoxy into a mold. For the labels I used the 3D dymo tape, but in a different way. I...
    14 replies | 839 view(s)
  • darryl's Avatar
    02-26-2017, 01:17 AM
    darryl replied to a thread OT: Dymo1000 labels in General
    Some of the 'guns' work better than others, seemingly spacing the letters more appropriately. I still use mine- what I've done to make them look a...
    14 replies | 839 view(s)
  • darryl's Avatar
    02-24-2017, 11:57 PM
    I have the same syndrome here. Till recently I've been able to keep track of pretty much every tool I use and where I left it last. That is starting...
    33 replies | 1850 view(s)
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About darryl

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About darryl
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Chilliwack, B.C.

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I seldom do anything within the scope of logical reason and calculated cost/benefit, etc- I'm following my passion-

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