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  • Duffy's Avatar
    Yesterday, 10:21 PM
    Duffy replied to a thread Ok CANADA, EXPLAIN this in General
    And to confuse the issue some more, torpedo power supplies ran at 2300Hz 120/208V. At least the Mk 44 did.
    76 replies | 3945 view(s)
  • Duffy's Avatar
    Yesterday, 10:16 PM
    Duffy replied to a thread Rotary burr v. mounted point in General
    Those "funkey tungsten carbide burrs" are Kutzall brand and are super for carving hardwood. In fact they work on pitchy woods too; you just burn them...
    14 replies | 842 view(s)
  • Duffy's Avatar
    05-24-2013, 10:21 AM
    For those who want some info on acetylene generators, look up, (or google,) Kipp generators. We hade one in a chemistry lab Looooong ago. That one...
    36 replies | 3123 view(s)
  • Duffy's Avatar
    05-24-2013, 09:51 AM
    Did you try hot water with some Dawn dish soap and let it soak? Then maybe a bit of vigorous scraping while wet? I understand your desire to do a...
    16 replies | 862 view(s)
  • Duffy's Avatar
    05-24-2013, 09:30 AM
    Duffy replied to a thread Rotary burr v. mounted point in General
    Russ, EVERYONE knows that rotary burrs are for excavating TEETH!;) Seriously, they should probably be limited to quite soft materials, say aluminum...
    14 replies | 842 view(s)
  • Duffy's Avatar
    05-22-2013, 10:17 PM
    Duffy replied to a thread VFD Application Question in General
    Thanks a lot for your information. I will pick the motors up tomorrow. They were removed from a pair of fan/coil units and are most probably North...
    7 replies | 260 view(s)
  • Duffy's Avatar
    05-22-2013, 02:45 PM
    Duffy started a thread VFD Application Question in General
    I have a 3/4 hp 3 ph motor on my Standard Modern 10"Utilathe. It is controlled by a 1 hp VFD. I want to up the power, and ideally a 1 hp motor is...
    7 replies | 260 view(s)
  • Duffy's Avatar
    05-22-2013, 02:02 PM
    Duffy replied to a thread Source for allen nuts. in General
    Try the parts section of any IKEA store. They have several varieties for their knock-down furniture-all metric.
    19 replies | 864 view(s)
  • Duffy's Avatar
    05-20-2013, 10:16 PM
    I just last week made two 5/8" male hose connectors and used 11 TPI. They worked fine. I checked the thread on the store-bought connector, and...
    10 replies | 908 view(s)
  • Duffy's Avatar
    05-08-2013, 09:49 PM
    Dont get discouraged by the scale details. A little research might surprise you! I recall that light field pieces were only i6 calibers, seige...
    7 replies | 834 view(s)
  • Duffy's Avatar
    05-08-2013, 10:18 AM
    I also have a 10X24 Logan and have pondered the same problem. I concluded that my best, (and easiest,) bet was to buy a foot of DOM tube with an...
    7 replies | 834 view(s)
  • Duffy's Avatar
    05-01-2013, 09:56 PM
    Are you sure that a set of collets from HF that fit a lot of these small "Dremel-like" grinders wont work? They are usually brass and cost a couple...
    12 replies | 1060 view(s)
  • Duffy's Avatar
    04-30-2013, 06:05 PM
    You gotta throw the brick from the OUTSIDE!:cool:
    30 replies | 2073 view(s)
  • Duffy's Avatar
    04-30-2013, 06:02 PM
    Forgot to mention, the pinion was hardened and therefore undamaged; that is why the rack teeth deformed. As well, a 3/4" woodruff key that locked a...
    5 replies | 282 view(s)
  • Duffy's Avatar
    04-30-2013, 05:57 PM
    I had an identical problem on my Standard Modern. Two of the teeth were literally BENT. The rack is steel and a torch brought it to red heat; I used...
    5 replies | 282 view(s)
  • Duffy's Avatar
    04-30-2013, 05:14 PM
    Duffy replied to a thread Need a better process.... in General
    I agree with muriatic acid. BUT if the OP is not familiar with it, here are some suggestions. Dilute it at least 2:1 giving about a 10% solution....
    7 replies | 450 view(s)
  • Duffy's Avatar
    04-29-2013, 06:27 PM
    The 4" fiber reinforced concrete should be just fine, with ONE condition:- make sure that the granular base, (crushed stone I guess,) is compacted...
    74 replies | 4575 view(s)
  • Duffy's Avatar
    04-28-2013, 05:21 PM
    Duffy replied to a thread a bandsaw question? in General
    Alistair, I have one question:- why? As it stands it will already cut brass and aluminum, (or even aluminium!) like there is no tomorrow. That leaves...
    9 replies | 486 view(s)
  • Duffy's Avatar
    04-27-2013, 09:52 AM
    If you are determined to try and empty them, then I suggest the following. First, find a plastic bottle of a diameter that the "grenade" will almost...
    49 replies | 3369 view(s)
  • Duffy's Avatar
    04-23-2013, 06:44 PM
    Duffy replied to a thread A little OT - a science quiz in General
    I got 13/13, but I sort of expected to before I began. In my other life I was a chemical engineer and then retreaded to an environmental engineer....
    208 replies | 10868 view(s)
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    04-18-2013, 09:06 AM
    I think that the FUNDEMENTAL cause is complacency. That famous expression "everybody knows," in this case that ammonium nitrate is an oxidizer and...
    68 replies | 5960 view(s)
  • Duffy's Avatar
    04-18-2013, 08:53 AM
    I dont know about your electrical code requirements, but here, (in Quebec,) a panel "upgrade" would require a new meter base and mast to accommodate...
    19 replies | 1048 view(s)
  • Duffy's Avatar
    04-11-2013, 10:14 PM
    Duffy replied to a thread casting aluminum in General
    Daryl, whatever you do, give old BBQ castings a miss. I have melted a few and they are DIRTY. Even with some aluminum flux, the quantity of floating...
    27 replies | 2068 view(s)
  • Duffy's Avatar
    04-11-2013, 09:54 AM
    Duffy replied to a thread McGyver is my hero in General
    Great idea Mcgyver, but did you think to ALSO include a Canadian Tire dollar just to show the young lady that we Canadians are truly strange?;) For...
    17 replies | 1892 view(s)
  • Duffy's Avatar
    04-11-2013, 09:21 AM
    I believe that the "other" name for colloidal silica is "silica fume." It is generated in glass furnaces and collected in the bag houses. It is used...
    24 replies | 1788 view(s)
  • Duffy's Avatar
    04-02-2013, 10:06 PM
    Duffy replied to a thread Clutch---again in General
    Brian, THIS time make your wooden cone from END-GRAIN wood. That will ensure uniform friction properties. It may not matter, but they are, in your...
    43 replies | 4387 view(s)
  • Duffy's Avatar
    04-02-2013, 02:31 PM
    Duffy replied to a thread Coal in General
    Minor "picky" about your explanation of weights Lazlo. The numbers refer to hunderdweights, CWT, each 112 pounds, QUARTERS, each 28 pounds, and...
    38 replies | 3294 view(s)
  • Duffy's Avatar
    04-01-2013, 10:30 PM
    Duffy replied to a thread Coal in General
    The coal from Tumbler ridge, as well as Fording and Elkford is all low-sulphur metalurgical coking coal. The deposits that run along the Rocky...
    38 replies | 3294 view(s)
  • Duffy's Avatar
    03-31-2013, 04:02 PM
    Duffy replied to a thread Work boots/shoes? in General
    Dayton Boots in Vancouver BC make excellent work boots but they are not cheap.
    49 replies | 4027 view(s)
  • Duffy's Avatar
    03-30-2013, 10:53 PM
    Duffy replied to a thread Work boots/shoes? in General
    Dont take this as Gospel, but I believe that there is a work boot maker in Newfoundland that supplies one of the major retailers, (maybe Mark's,...
    49 replies | 4027 view(s)
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Duffy, Gatineau, Quebec

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