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Type: Posts; User: JohnMartin

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  1. Replies
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    My horizontal is a Heald, 40 NMTB spindle. ...

    My horizontal is a Heald, 40 NMTB spindle. Pretty solid. Only real negative is that it uses a step pulley system rather than a gearbox for the table feed, so you can’t switch the feed direction.
    ...
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    Had one just like it about 60 plus years ago. It...

    Had one just like it about 60 plus years ago. It was an UV bulb, came in a science kit. Only thing that I remember for sure came with it was a small piece of black locust wood that glowed pretty...
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    I don’t generally disagree with Thermite because...

    I don’t generally disagree with Thermite because he’s right much more often than not, but by all means get a vise. Just a guess, but I’d say that well over half of the setups I do on the horizontal...
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    Moore boring heads

    Does anyone know if the shanks on the small Moore boring heads are removable? I want to pick up one to use on my jig bore, which would require removing the Moore shank and replacing it with an...
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    Follow up: finally got around to running these,...

    Follow up: finally got around to running these, and it worked perfectly.

    Used the Norton 60 grit non-reinforced wheel. Workpieces were held in a drilled and reamed holder, held in a 5C collet...
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    Check the lathes.co.uk website for your Linley...

    Check the lathes.co.uk website for your Linley jig bore, and you’ll find descriptions of the different collets that they used.
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    Collets for those machines are horribly...

    Collets for those machines are horribly expensive. New, from Famco - the current owner of Gorton - as I recall they are $300 plus. Hardinge would make them, but also expensive.


    You can find them...
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    WTB Mayhew Tap Wrench

    Looking for an old Mayhew tap wrench - large size, about 23” long. Has to be Mayhew, as it is to complete a set. Anyone have one?
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    Linley used two totally different collet types. ...

    Linley used two totally different collet types. Which is yours?
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    Not everyone knows how to use a micrometer. If...

    Not everyone knows how to use a micrometer.

    If he reports to you, it’s your responsibility to make sure he knows how to use all his tools. And, if he keeps screwing up, to fire him.

    If he...
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    633

    1/2” x 20 serial tap?

    1/2” x 20 serial tap?
  12. It's the grinder itself that carries the...

    It's the grinder itself that carries the "Toolmaker" name, whether or not it has the optional swivel table, centers, Unihead, etc. The Vintage Machinery website has most of the available literature,...
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    Many thanks, Buck, for the advice. Any...

    Many thanks, Buck, for the advice.

    Any thoughts as to whether I should be using the reinforced or the non-reinforced wheel? I’m thinking the non-reinforced with it’s smooth sides would be less...
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    Any advice? I’d rather not start by snagging...

    Any advice? I’d rather not start by snagging parts and blowing up wheels....
  15. Replies
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    2,509

    Do you want the index or the drills?

    Do you want the index or the drills?
  16. I’ll take door number two: no but here are my...

    I’ll take door number two: no but here are my thoughts

    You don’t say what mill you have. There are some tiny machines that this would overstrain, and some big ones that wouldn’t even know you...
  17. Replies
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    Speaking of overarms, that’s the strangest...

    Speaking of overarms, that’s the strangest looking one I’ve ever seen. What’s the idea behind that huge oval at the bottom?
  18. Replies
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    Need slitting / slotting advice

    I need to make some reducer bushings for a Gorton pantograph. The pantograph has a 5/16” collet, and I need reducers to 1/8” and 3/16”.

    I’m starting with drill bushings, already hardened, 3/4”...
  19. Thread: Linley mill

    by JohnMartin
    Replies
    9
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    968

    I’d like to hear more about the collets. I’ve...

    I’d like to hear more about the collets. I’ve got an old Vernon jig bore - very similar to the Linley - that uses the same collets as the old style Linley did - the collets that look sort of like a...
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    Shaft with a conical hole in the end of it, and a...

    Shaft with a conical hole in the end of it, and a depth rod down through the middle. Seat the conical hole on the boss, lower the depth rod until it hits the top of the boss, then lock it. If you...
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    The B&S 00B collets are a perfect match, but...

    The B&S 00B collets are a perfect match, but these also are pretty rare. The B&S 00 collets are identical except that they have a “high hat” top surface with flat shoulders rather than the angled or...
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    You want a wide and long timber-framed...

    You want a wide and long timber-framed carriage-bolted base under it. Block it into the truck or screw it to a wooden trailer deck. Remove high heavy parts if you can. Lower the table down onto...
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    MS261 and MS660 for me. But both are pro saws,...

    MS261 and MS660 for me. But both are pro saws, and they sell a lot more of the homeowner and mid-range saws than these. The 660 is not a small saw, if that is your target market.

    Hard to imagine...
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    If the exact degree of taper is not critical, you...

    If the exact degree of taper is not critical, you can get there using standard taper pin reamers. The taper is a quarter inch per foot, which is very close to your desired 5/16 over 14 inches. A...
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    Look for serial hand taps They are meant to be...

    Look for serial hand taps They are meant to be used sequentially, with only the number three cutting a full size thread. Used for difficult materials.
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