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Type: Posts; User: Derek Smalls

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  1. Replies
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    There is nothing inherently wrong with holding a...

    There is nothing inherently wrong with holding a work piece in a chuck and supporting the other end with a center. This is done every day to get jobs done, and in some cases, I'm thinking of very...
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    Once I had a car. It was a nice car but it...

    Once I had a car. It was a nice car but it pulled to the right when it was going down the road, SO, I decided that in order to fix that problem I should put a huge tractor tire on the front left...
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    Not sure what this means. He would not see...

    Not sure what this means. He would not see what???

    Then proceed to what???
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    For a quick answer to your question as to can the...

    For a quick answer to your question as to can the correction be made simply by offsetting the tail stock, the question of how consistent is the taper, must first be answered.
    You say the part is...
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    1/4-28 maybe??? It's awful close to M6x1,...

    1/4-28 maybe??? It's awful close to M6x1, mistaking the two would probably cause exactly what you're describing. I would expect an older American woodworking machine to be Imperial. Is everything...
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    It looks like it's not threaded all the way on to...

    It looks like it's not threaded all the way on to the shoulder of the spindle nose. Are the threads bottoming out in the back plate before it goes on far enough?
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    I've got a 10" Cushman that's in good used...

    I've got a 10" Cushman that's in good used condition. Shoot me a pm if interested and I'll get you some pics.
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    My advice is to pick up a tracer unit. You can...

    My advice is to pick up a tracer unit. You can sometimes find one for next to nothing if you look around. Great for tapers and a lot of other stuff.
  9. Just a guess, but maybe someone was modifying it...

    Just a guess, but maybe someone was modifying it for some high lead application where the spindle would be driven at a slow speed by the end gears???
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    I second that. I've only ever run one that was...

    I second that. I've only ever run one that was similar to the OP's, and I don't even see many of them around, although I see lots of older style Gorton mills and pantographs. I don't know why they...
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    For the record, I would, although this is...

    For the record, I would, although this is starting to sound like one of those pathetic facebook "If you you really care about me you'll repost this, let's see who reposts it and cares" kinda things. ...
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    Yeah, I was trying to say the part must be offset...

    Yeah, I was trying to say the part must be offset so as to cut deeper at the larger end to compensate for the difference in the "m" dimension, but I didn't say it very clearly. Hard to describe...
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    When machining large keyways in tapered members...

    When machining large keyways in tapered members you must account for the difference in the "m" dimension at each end of the taper. The keyway is NOT to be parallel to the side of the bore it cut on,...
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    Shop made, yes, but they seem too "universal" to...

    Shop made, yes, but they seem too "universal" to be job specific. They are an uncommon design, but were made to be used for a lot of different types of things. Look at all the working surfaces,...
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    As others have said, you've not really explained...

    As others have said, you've not really explained what exactly that outcome is. In your OP, you said you are getting taper because the jaws are lifting due to the increased jaw pressure??? Taper in...
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    Certainly not the shortest way around the barn.

    Certainly not the shortest way around the barn.
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    I would say the bed has certainly been reworked...

    I would say the bed has certainly been reworked at some point. As previously stated, a machine from that era would not have ground ways, they would be planed and possibly frosted, maybe left as...
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    Am I understanding this right??? So, the one for...

    Am I understanding this right??? So, the one for sale is one of only four known to exist?
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    Did you get the half nuts?I'd imagine they are...

    Did you get the half nuts?I'd imagine they are the only thing different from a standard machine in the apron.
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    Well, it seems you have the machine now cutting...

    Well, it seems you have the machine now cutting the correct lead of 1mm, so that problem is solved if I understand correctly.

    The reason your thread looked so torn up is because the half nut was...
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    First, you can NOT release the half nut when...

    First, you can NOT release the half nut when cutting metric threads with an imperial leadscrew. This was causing a tracking problem which led to the torn up threads you were getting before. Easy...
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    Gregg, your inbox is full. Most of the machine...

    Gregg, your inbox is full.

    Most of the machine is sold at this point. Thanks to many here who have bought parts.

    Pretty much all that remains is parts of the cabinet(leveling feet, covers,...
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    Sorry, the sliding gear has been sold. I do...

    Sorry, the sliding gear has been sold. I do still have the quadrant arm, and the wide 75 tooth gear that is the final driven of that gear train, if that is any help.
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    I totally agree with above comments that it is...

    I totally agree with above comments that it is more of a "feel" thing, and the right answer in one case, with a particular machine, wheel, dress, use of coolant, depth of cut, ect., may not work in...
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    I have the operation/service manual as well as...

    I have the operation/service manual as well as the parts manual for all Techmaster grinders. I'd be willing to make copies if you cover my time and expenses. Please message me if I can help.
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