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  1. Old photos gone, replaced with generic Photobucket image

    A lot of the photographs in older posts are not showing for me, there is just a generic Photobucket image of a fuzzy picture of a lathe.

    Does that mean the pictures were hosted on Photobucket...
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    Change gears for a Clausing 4902?

    I want to wind a 3/8" coil which is 8 threads per 3 inches or 2-2/3 TPI. My blacksmith has a Clausing 4902 which, like most lathes in that class, only goes down to 4 TPI. Is it possible to use change...
  3. "Lard oil (or machine oil) should be used when...

    "Lard oil (or machine oil) should be used when cutting screw threads in steel in order to produce a smooth thread."

    -- direct quote from "How to Run a Lathe" by The South Bend Lathe Works

    Lard...
  4. Thread: Shop advertising

    by jscpm
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    2,429

    Don't advertise. If you are a one man show, you...

    Don't advertise. If you are a one man show, you don't have time to deal with customers off the street.

    Go to whatever local shops match the kind of work you do and ask them for the work they don't...
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    Getting a clamping action on a hinged part

    I have a clamp that holds two pins as follows:

    262415

    Material is 642 bronze. The planned clamping action is by putting screws through the flat part of the clamp to tighten it up.

    There are...
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    The secret to getting a clean chamfer is to drill...

    The secret to getting a clean chamfer is to drill the countersink profile FIRST, then drill the holes after.
  7. If there is a discontinuity in the surface, then...

    If there is a discontinuity in the surface, then it violates the surface finish requirement. The fact that the finish is damaged in only one place is irrelevant. The surface finish must be consistent...
  8. Trying to turn the faces at the same time using a...

    Trying to turn the faces at the same time using a collet is not a stable solution.

    The right approach is to (1) face one side, (2) turn the taper, (3) face the other side.

    Doing things in this...
  9. I have an automatic answering system that says...

    I have an automatic answering system that says "Press 1 to talk to jsc, Press 2 to leave a message, Press nothing if you a robocaller."
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    Does a bear shit in the woods? That is the...

    Does a bear shit in the woods?

    That is the wrong metaphor, :dopeslap: but anyway, the plastic will probably not last long. The reason is that when a shaft rotates it presses unequally on the wall...
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    I probably have THC "in my system" from college...

    I probably have THC "in my system" from college 30 years ago.

    I wish more of my employees were potheads. Potheads are relaxed. In my experience it is the souped up job hoppers that rush things and...
  12. Sounds like more of rant than a...

    Sounds like more of rant than a question...:nopity: but anyway

    There are two kinds of safety: (1) crazy, time-wasting shit that OSHA makes you do, and (2) actual practices that are useful to do...
  13. Some additional research revealed that the screw...

    Some additional research revealed that the screw is called a "Delta PT" screw.

    Nothing worse than these obscure fasteners that are impractical to duplicate locally.
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    People who complain about how they are "running...

    People who complain about how they are "running out of sand" are pretty much the same people who complain that we are "running out of machinists."
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    7,632

    When you get somebody like this that is slipshod,...

    When you get somebody like this that is slipshod, it means they are thinking about something other than their work. Their guitar band, their hot rod, their video game strategies, their plans with the...
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    Thank you for providing a complete drawing....

    Thank you for providing a complete drawing. :Ithankyou:

    What is the material?

    In general, when making thin wall tubes like this, the usual approach is swaging, so you might want to contact a...
  17. Screw for plastic with canted shaft, what is it called?

    I am trying to replace some rusted out security screws that are designed to go into a plastic housing. The screws are about 12 TPI #10, but the shaft is canted. The profile of the screw looks...
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    Just for the record, I am copying the comments to...

    Just for the record, I am copying the comments to text because web links always go bad eventually (aka please don't post links, post the data):

    Fox News "host" Trish Regan Sunday, August 12, 2018:...
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    1. Leasing to the business makes sense. 2. Try...

    1. Leasing to the business makes sense.

    2. Try to keep the business under the radar for as long as possible by using PO boxes for billing and official purposes. Don't put signs on the property...
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    No dimensions given. No tolerance given. No...

    No dimensions given.
    No tolerance given.
    No material specified.
    No sections provided.
    3D rendering views do not completely show object.

    I suggest learning how to become a machinist first, and...
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    Or you could not waste your time and money on...

    Or you could not waste your time and money on insurance and instead just borrow the $1 million in the 1 in 2000 chance that you need the money.

    In fact, I bet you could get a $1 million line of...
  22. The drill system was designed by the inventor of...

    The drill system was designed by the inventor of the twist drill, Stephen A. Morse. Morse also designed the Morse Taper system. Morse also founded the firm of Morse and Williams, an important...
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    I use a Priape to retain my large nuts.

    I use a Priape to retain my large nuts.
  24. Poll: I have a lot of expertise in the systems used in...

    I have a lot of expertise in the systems used in automated vehicles and I can tell you: don't hold your breath because "driverless cars" are not coming any time soon.

    I was on a panel recently at...
  25. Uh, sitting while welding and working at the...

    Uh, sitting while welding and working at the computer? You realize those are diametrically opposed activities, right?
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