Pratt & Whitney M-1689 10 X 20 Bench lathe

Mark Thompson · Sep 10, 2017

Just got this lathe yesterday. Need to know where i can get a few things.
First I need is a tool holder. Whould like a copy of operations manual. And parts book.
I would like to convert it back to collets what size and type should I get.
My SN. 552 When do you all think it was made.
How do I post picture of Lathe? I see no option to do it.

johnoder · Sep 10, 2017

My SN. 552 When do you all think it was made

Between 1940 and 1945 - only two serials in serial book for this model

If no "manual" found, it may be because none was offered - for the simple reason that related books had been written forty years before like this

Accurate Tool Work : Clarence Leon Goodrich, Frank Arthur Stanley : Free Download & Streaming : Internet Archive

lazz · Sep 10, 2017

To post a picture look to the top of the area you type in....

There are 16 options. the 14 th from the left or 3rd from the right looks like a tree in a box...
Insert image

Limy Sami · Sep 10, 2017

johnoder said:
If no "manual" found, it may be because none was offered - for the simple reason that related books had been written forty years before like this

Accurate Tool Work : Clarence Leon Goodrich, Frank Arthur Stanley : Free Download & Streaming : Internet Archive

Thank you John ...I didn't know that book was on line, ......my own copy went walk about eons back.

Mark Thompson · Sep 12, 2017

Thank Lazz, I found out that because I am using a tablet that many options are not available on moble devices. I will did out my lap top and try that this weekend.

Mark Thompson · Sep 18, 2017

My Pratt & Whitney lathe

Will try to post pictures. From left to right.
1. lath as I bought it, came with table.
2. Pratt & Whitney casting in Bed.
3. Pratt & Whitney Brass plaque whit SN.No. 552.
4. Pratt & Whitney name and another number 681 Engraved in cross Slide.
5. Nice On and off switch Brass Plate.

Mark Thompson · Sep 18, 2017

A few more pictures

More pictures.

1. Cross Slide X axes 90^ elbow added.
2. Got 4 jaw chuck too. also collet drawbar.
3. had too touch up the paint.

What do you all think about it? Should I use 1/2 inch. cutting tools what size tool holder should fit this 10 inch lathe?

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Pratt & Whitney M-1689 10 X 20 Bench lathe

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Mark Thompson

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