Author Topic: Pratt & Whitney 6" Slotter  (Read 1264 times)

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Offline WarnerConstCo.

  • Posts: 4184
    • Warner Mill Works
Pratt & Whitney 6" Slotter
« on: August 07, 2021, 02:23 PM »
Finally able to get this thing out of its former shop, bought it 6 months ago....

1959.

Watch out internal keyways and splines.

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Offline Cheese

  • Posts: 8906
Re: Pratt & Whitney 6" Slotter
« Reply #1 on: August 07, 2021, 05:03 PM »
Interesting...never heard of the item. I've used a horizontal shaper before, I assume it functions similar to that but on a different axis.

Offline WarnerConstCo.

  • Posts: 4184
    • Warner Mill Works
Re: Pratt & Whitney 6" Slotter
« Reply #2 on: August 07, 2021, 05:17 PM »
Interesting...never heard of the item. I've used a horizontal shaper before, I assume it functions similar to that but on a different axis.
Also called vertical shaper. For cutting long internal keys, splines, etc.

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Offline Birdhunter

  • Posts: 3557
  • Woodworker, Sportsman, Retired
Re: Pratt & Whitney 6" Slotter
« Reply #3 on: August 07, 2021, 06:02 PM »
I worked at Pratt for about 6 years. Incredible history building piston engines, jet engines, and rocket motors. Didn’t know they built machine tools.
Birdhunter

Offline Crazyraceguy

  • Posts: 695
Re: Pratt & Whitney 6" Slotter
« Reply #4 on: August 07, 2021, 06:14 PM »
That's a very cool, yet very niche, machine.
I love old equipment like that, and can just imagine it in some factory somewhere cranking out parts decades ago.
I went through a vocational school program in what would be called "manual machinist" today. For the first few years after that, I worked for Sandvik, in the Coromant division. We made T-Max and Trepan style drills, until they consolidated a few plants and moved to a new location.
CSX
DF500 + assortment set
PS420 + Base kit
OF1010
OF1400
MFK700 (2)
TS55, FS1080, FS1400 holey, FS1900, FS3000
CT26E + Workshop cleaning set
RO90
RO125
ETS EC 125
RAS115
ETS 125 (2)
TS75
Shaper Origin/Workstation

Offline WarnerConstCo.

  • Posts: 4184
    • Warner Mill Works
Re: Pratt & Whitney 6" Slotter
« Reply #5 on: August 07, 2021, 08:19 PM »
That's a very cool, yet very niche, machine.
I love old equipment like that, and can just imagine it in some factory somewhere cranking out parts decades ago.
I went through a vocational school program in what would be called "manual machinist" today. For the first few years after that, I worked for Sandvik, in the Coromant division. We made T-Max and Trepan style drills, until they consolidated a few plants and moved to a new location.
I end up needing to slot pulleys and gears fairly regularly. I can make square, rectangle, hex holes, etc. splines, pretty handy machine to have.

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Offline Cheese

  • Posts: 8906
Re: Pratt & Whitney 6" Slotter
« Reply #6 on: August 08, 2021, 01:11 AM »
Although it's a fuzzy remembrance...I do remember using the horizontal shaper several times over 50 years ago and even at that time it was considered by most people to be a prehistoric machine. Absolutely no one seemed to like using it or even getting close to it as it spewed smoking hot, blued metal chips that were about .060-.080" thick across the floor. When it was fired up, it was definitely given it's due. It shook the floor while it was operating and everyone knew to be alert when it was fired up.

So if the vertical shaper does splines, it's not that far from a hobbing machine.

Offline WarnerConstCo.

  • Posts: 4184
    • Warner Mill Works
Re: Pratt & Whitney 6" Slotter
« Reply #7 on: August 26, 2021, 10:50 PM »
Played around, made chips.



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Offline squall_line

  • Posts: 776
Re: Pratt & Whitney 6" Slotter
« Reply #8 on: August 26, 2021, 11:21 PM »
Played around, made chips.



Very exciting!  Thanks for sharing!

Offline tallgrass

  • Posts: 986
Re: Pratt & Whitney 6" Slotter
« Reply #9 on: August 27, 2021, 01:28 PM »
Fantastic. Shapers are such a joy.

Offline Birdhunter

  • Posts: 3557
  • Woodworker, Sportsman, Retired
Re: Pratt & Whitney 6" Slotter
« Reply #10 on: August 27, 2021, 02:32 PM »
I’ve seen a video on Abom79 where he uses a giant shaper. It strokes horizontally.
Birdhunter

Offline WarnerConstCo.

  • Posts: 4184
    • Warner Mill Works
Re: Pratt & Whitney 6" Slotter
« Reply #11 on: August 27, 2021, 11:15 PM »
I’ve seen a video on Abom79 where he uses a giant shaper. It strokes horizontally.
These were also called vertical shapers.

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