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  • Duffy's Avatar
    01-01-2019, 05:53 PM
    Dielectric unions will work, but for confined spaces can you use an "insulbushing?" The name says it all:- a standard reducing bushing fabricated...
    12 replies | 670 view(s)
  • Duffy's Avatar
    12-29-2018, 07:39 PM
    Duffy replied to a thread Multi-use airtight booth in General
    In a "chemical" fume hood, the vertical sliding sash drops down onto an airfoil-shaped sill when it is closed. There is about a one inch gap under...
    18 replies | 771 view(s)
  • Duffy's Avatar
    12-27-2018, 06:38 PM
    Duffy replied to a thread Multi-use airtight booth in General
    Daryl, one design requirement for your hood to work safely;- inlet air velocity, (past you as you stand before the hood,) is minimum 80fpm and...
    18 replies | 771 view(s)
  • Duffy's Avatar
    12-27-2018, 01:28 PM
    Duffy replied to a thread Multi-use airtight booth in General
    In case you have missed it, you are now in the field of either Chemical Fume Hoods or Biological Safety Cabinets. These have been VERY extensively...
    18 replies | 771 view(s)
  • Duffy's Avatar
    12-19-2018, 01:01 PM
    Duffy replied to a thread Battery, (Cell,) Chemistry in General
    The battery, (cell,) is NOT 39 years old, but has been replaced several, (many,) times. I was given this model Canon FC53 after my FC52 went...
    8 replies | 395 view(s)
  • Duffy's Avatar
    12-19-2018, 12:06 PM
    Try Keystone Enterprises; they make nothing but threaded rod. I think that they are in Cleveland, but definitely somewhere in Ohio.
    55 replies | 3092 view(s)
  • Duffy's Avatar
    12-19-2018, 10:36 AM
    I have an ancient, (39 years,) Cannon pocket calculator. It is powered by a lithium cell which has leaked. For all common cells, which have an...
    8 replies | 395 view(s)
  • Duffy's Avatar
    12-16-2018, 07:20 PM
    Duffy replied to a thread Burning mulch? in General
    Back in the 70s, British Columbia Research Council developed and patented a process termed "the Fuel Log Process." It seemed simple, deceptively so,...
    25 replies | 1493 view(s)
  • Duffy's Avatar
    12-16-2018, 06:48 PM
    Mcgyver, since it is home, I would bet that, if not 220 then it is 575 volts. If the motor is any age at all it will be the latter. New stuff is 600...
    9 replies | 510 view(s)
  • Duffy's Avatar
    12-14-2018, 07:10 PM
    Duffy replied to a thread making vice jaws. in General
    See if you can find an old WORN farrier's rap and use it for replacement jaw faces. I have a couple and they are about 16" by o.5" thick. you ill...
    35 replies | 2174 view(s)
  • Duffy's Avatar
    12-12-2018, 04:04 PM
    Duffy replied to a thread Glue For Neoprene Rubber in General
    It seems to me that every inner tube made for a tire has been made from neoprene since WW2. You should be able to get tube patching cement at bike...
    39 replies | 1589 view(s)
  • Duffy's Avatar
    12-12-2018, 03:52 PM
    Duffy replied to a thread A sign of the times: in General
    Sasquach, every single scrap yard in the region around Ottawa/Gatineau has been bought by American Iron and Metals, (AIM,) out of Montreal. As a...
    14 replies | 1463 view(s)
  • Duffy's Avatar
    12-12-2018, 03:46 PM
    Try Harbor Freight or similar. Princess Auto up here had a ring light with separate switch and wall wart for about $30.00. I adapted it to my...
    7 replies | 412 view(s)
  • Duffy's Avatar
    12-10-2018, 09:43 PM
    One suggestion for drawer construction is the extruded side frames sold by Lee Valley. They come in three widths I think, but a table saw will...
    110 replies | 6073 view(s)
  • Duffy's Avatar
    12-08-2018, 09:22 PM
    A couple of points:- I built MY interpretation of a Gerstner, with pretty much all of the traditional design. Two changes were external latches from...
    110 replies | 6073 view(s)
  • Duffy's Avatar
    11-29-2018, 01:43 PM
    The set screw locks into a recess in the clapper. It does not rely soley on friction with the clapper wall.
    17 replies | 1265 view(s)
  • Duffy's Avatar
    11-28-2018, 11:47 PM
    Now this MAY be considered HERESY! Have you considered making machine screws, with the correct head profile, but with a suitable coarse V thread....
    19 replies | 924 view(s)
  • Duffy's Avatar
    11-28-2018, 08:42 PM
    Brian, I agree with BCRider. Your mandrel speed will be about 5000 rpm, (just like a skilsaw.) This means your abrasive speed will be over 9000 fpm,...
    27 replies | 1415 view(s)
  • Duffy's Avatar
    11-28-2018, 07:15 PM
    You want the clapper locked up when you are cutting an internal keyway on the RETURE stroke. It apparently gives better results.
    17 replies | 1265 view(s)
  • Duffy's Avatar
    11-07-2018, 01:04 PM
    My grandson purchased the above-named mask, and before anyone asks, NOT from the roadrunner:D! it looks like a WW2 gas mask, but with welding lenses....
    1 replies | 463 view(s)
  • Duffy's Avatar
    10-24-2018, 07:20 PM
    Duffy replied to a thread Seeking bevel gear help in General
    Brian I have a set of 18/36 gears. The larger is about 1.02" and 0.25" bore and the smaller is about 0.54" and 3/16" bore. These are steel, but...
    7 replies | 594 view(s)
  • Duffy's Avatar
    10-19-2018, 07:11 PM
    Leave it alone. As my daughter pointed out, who will steal and/or strip a car that looks like that?
    13 replies | 1357 view(s)
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Duffy, Gatineau, Quebec

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