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    [QUOTE=Spruewell;3400954]That looks like a real...

    [QUOTE=Spruewell;3400954]That looks like a real mess.

    agree with the mess comment, but----shop rats keep invertebrate population under control:)
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    ot---gundrilling with french vanilla

    so--topic of this thread is drilling 7/16 inch bore thru 35 inch long Moore jig borer spindle--thru which draw bar will be inserted to seat iso 30 tooling ground to Moore taper

    spindle is R-60...
  3. building ocean liners -----------------1920

    YouTube
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    expect to have pricing within 2 days jh

    expect to have pricing within 2 days

    jh
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    ot----Chernobyl graphite

    yep---its the real deal

    Chernobyl nuclear event occurred April 1986

    one year later corporation"M"--4 miles from my operation purchased 20+ metric tonnes --grade B nuclear graphite--which was...
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    taper toolholder grinding-- a few thoughts

    so I am using 30 taper iso tooling from China--good quality and holders are factory balanced to 20K rpm

    to balance these holders an eccentric circumferential grind appears to be employed rather...
  7. no reference or moving footage of crane...

    no reference or moving footage of crane located---but some form of rack and gear movement with beam clamping would appear essential

    considerable intrigue at this abandoned rail site in...
  8. the spectacular arched crane of Laboratorio Subterráneo de Canfranc

    deep in the heart of Mount Tobazo---Aragon Pyrenees--is found an astrophysical research station dedicated to study of cosmic particles

    in main chamber is a wondrous arched bridge crane------------...
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    taper toolholder grinding

    not much available on this topic as small shop undertaking--even oem's
    in videos do not disclose much

    a few points connected with conversion of iso 30 taper tooling to Moore jig borer...
  10. "[I am not sure what "alloplastics" are]" ...

    "[I am not sure what "alloplastics" are]"

    alloplastics in the context I note references implants into airway tissue--
    most commonly soft palate --of foreign material--some forms hydrolyze over...
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    my initial plan was to grind spindle socket to 30...

    my initial plan was to grind spindle socket to 30 erickson-- with drawbar
    given the precision of the factory taper socket there is little liklihood
    my grind effort would yield axial and radial...
  12. against better judgment I comment here-- I am...

    against better judgment I comment here--
    I am ENT doc with 6000+ nasal--oral surgical airway interventions and offer the
    following:

    avoid implant gadgets--alloplastics--high failure and...
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    single point lift------B-18 jig borer

    Moore notes in manual for G-18---predecessor of B-18---eyelet in
    top casting of G-18
    thread is 1 in-8tpi so I installed bolt, washer, jam nut and lift sleeve/shackle and moved borer a few...
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    thumbs up---open frame motors

    so I initially mated 3 hp 1700 rpm motor--off italian woodworking machine operating at fixed speed and light cutting load --to the B-18

    I could push it with inverter to 50 cycles and then vfd...
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    the barn find

    both x,y encoder scales work

    drive system for y axis functions as expected

    x axis drive has malfunction characterized by runaway

    step motors will replace brush dc servo motors on this...
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    its alive

    using vfd set to 60 cycles jig borer spins at factory spec of 2250 rpm

    analog tac display is neat feature and requires no input power in any form--magnetic induction moves hand
    with this...
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    if this Moore was one unit of a production shop...

    if this Moore was one unit of a production shop with part quotas--your suggestion would be a likely option---but alteration of the machine profile envelope would compromise its character--

    and...
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    25 years ago we did what you suggest to a...

    25 years ago we did what you suggest to a bridgeport 2j head --removed vari-sheave configuration and replaced with goodyear cog belt drive with vfd---worked beautifully--but the bp head allowed a...
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    power run

    vfd power applied to new motor drive

    this configuration does not like spindle frequency beyond 2500 rpm---motor is 1700 speced at 60 hz

    moore belts are stretched asymmetrically --will need...
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    my 8 axis Walter cnc grinder could produce...

    my 8 axis Walter cnc grinder could produce illustrated geometry--but it
    is large enough to allow 4 adults to stand in enclosure ---3 spindles

    with production limitations you outline I would...
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    new power

    all components of vari-drive assembly were removed

    3 hp donor motor --aluminum frame 1700 rpm dual voltage C-frame
    is employed as new power---but flange dimensions do not allow direct bolt up...
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    I am collector/retrofitter in order to fully...

    I am collector/retrofitter
    in order to fully understand a mechanical mechanism you must tear down and reassemble or execute working modification--upgrade

    there is no current market for Moore jig...
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    Moore B-18 Jig Borer

    1982 product brochure
  24. ot------------Lincoln High Visibility Lens shade No 10

    the supply clerk in building S, tech area, Los Alamos, was puzzled by the request---issue 100 Lincoln High Visibility Lens to individuals--none being metal fabricators

    He understood soon enough
    ...
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    Ross what steps followed application of boring...

    Ross

    what steps followed application of boring head?

    is spark plug type long or short insulator?
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