When I was a "post-doc" researcher at the NASA Goddard Institute for Space Studies in NYC in the 80's we bought one specifically to build tiny waveguide components for use on radio telescopes. Frequently devices were toleranced to +/- 0.0001" with features that were on the scale of 0.010 to 0.020". The guy who ran the machine was a magician.
I have a Linley Jig Borer that I recently got home safe to the garage. Any advice on where to find references about these machines? I'd love to get my hands on a good book for the novice so I can begin to understand what I have and where to start. I'll try to post pics.
Also, if anybody could look at picture #6 and tell me if I have all of the collets?
Final picture is of the wrecker hoisting the machine out of our trailer and to the ground so I can unbolt the pallet I made to ship it on. My Dad is in the background supervising, LOL.
"Collets were held in the quill by a compression nut on the nose - and could be had in sizes from 1/8" to 1/2" in increments of 1/32". Early collets were of the ordinary split-from-one-end type, which limited the machine's usefulness as a light-duty vertical miller, the sideways forces on the cutters causing them to work loose unless only the most judicious of cuts was taken; in what must have been a recognition of the fact that so tempting a small machine would (unless locked in a strong-room) inevitably be pressing into service for other than boring accurate holes, Linley equipped the Mk. 1A with the vastly-superior Schaublin Type ESX collet; this type had slits running from both ends and was specially designed to provided a secure grip on the shanks of small cutters.
Linley had offered a down-travel-only power-feed head as an optional extra for some time, but with the coming of the 1A it was made standard - though, no doubt, they would not have refused to sell a machine without and not all 1As may be so equipped."