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  1. Replies
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    While scaling up the gear train drawing from the...

    While scaling up the gear train drawing from the Levin lathe threading option, I noticed that the 50P gears would scale to 22P for the Stark #4. This may (?) be why they were in this lot of Stark...
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    325479 Ok, but now I have to find some 1/8"...

    325479

    Ok, but now I have to find some 1/8" key stock !

    (This Stark cuts so smooth I couldn't believe it. Almost don't miss power feed, as this was faster, I think, on something like boring a...
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    Current Misadventure: Time to bore out the...

    Current Misadventure: Time to bore out the 50-tooth spindle gear.
    The 4-jaw chuck refused to mount on either Stark. It must have been fitted to some other 1 3/4 - 10 spindle ? The thread on the...
  4. Replies
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    325268325270 The idea of an electronic "thread...

    325268325270

    The idea of an electronic "thread chaser" w/o modifying the Stark has me thinking. I've modified a grinder mount to fit on the tool holder. If I clamp an encoder onto the X-axis...
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    Update: Been using the "temporary" stepping...

    Update:

    Been using the "temporary" stepping motor to clean up the face plate. The slots has been cleaned up by boring to 3/8" so that the cheap 8mm t-bolts can be used, the surface has been...
  6. No, it's a homebrew still running DESKNC on...

    No, it's a homebrew still running DESKNC on Win98. The steppers are rewired syncros and the drivers are Parker S drives from EBay. Hardest part was finding a scrap screw gear for the Z axis.
    ...
  7. I have one of these mills which I converted to...

    I have one of these mills which I converted to CNC over 20 years ago. The transmission is more than adequate and have never seen the need to add a VFD. DRO would be the first choice and very nice...
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    I like that idea, the over center tensioning...

    I like that idea, the over center tensioning lever ! If I use 3 belts I might get away w/ a single lever with a compession spring in the rod. (?)
  9. Replies
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    I think you are right. I was trying to lay out...

    I think you are right. I was trying to lay out parts and think what the constraints were.

    324752

    Sliding might work, but I would have to have 3 individual belts. That's not a problem, but I...
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    324708 The faceplate is a new old stock...

    324708

    The faceplate is a new old stock Craftsman rescued from EBay. The collet was made from a 1 1/2" stainless shaft cutoff from a ballscrew.

    324709

    The Velcro "belt" is waiting for the...
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    324628 Looks like the only way to get 4S...

    324628

    Looks like the only way to get 4S collets is to make them ! This plug will be used to mount a faceplate. It works fine in the headstock, but the thread is actually too long.
  12. Replies
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    324607 Sometimes just easier to grab a slab of...

    324607

    Sometimes just easier to grab a slab of cast iron and turn a new one...
  13. Replies
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    324324 Making up a belt pulley for the...

    324324

    Making up a belt pulley for the variable speed DC motor. The thought is to pivot the motor from the back 3/4" rail and use gravity for tension. If the motor is free to be positioned along...
  14. Replies
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    324281 First try at tapers: a die holder from...

    324281

    First try at tapers: a die holder from a #4 Morse (took a lot of filing), two blanks in 2.25" 4.5 Jarno to be turned into centers on the Stark.

    324282

    There are now 4 chucks. There...
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    323974 Bearings came today...both slides are...

    323974

    Bearings came today...both slides are now smooth ! The friction on the dial set is controlled by a small brass pin set in a hole and backed by a spring. The screws and spacer in the lower...
  16. Replies
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    These are the specs for this motor type from...

    These are the specs for this motor type from EBAY. The 3 volt input doesn't make sense to me. Does anyone have info on these motors ?

    Brand: ELECTRO-CRAFT
    Performance Level: High Inertia ...
  17. Replies
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    Today's find was a 3/4" stainless bar the length...

    Today's find was a 3/4" stainless bar the length of the bed. It will take a bit of work for proper mounting.

    323881

    More digging: a 10TPI thread 0.925" OD sitting next to #183 and a DC motor...
  18. Replies
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    There are 4, 50 tooth gears in the stack, so one...

    There are 4, 50 tooth gears in the stack, so one of those could be bored as the new spindle gear. Still waiting for a belt that will fit the temporary drive. The one that showed up was too long....
  19. Replies
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    A couple of catchup notes: The...

    A couple of catchup notes:

    The headstock/tailstock alignment seems to be perfect, even after a hundred years or so!
    323683

    The hellbox provided 3 pins of unknown application, one of which was...
  20. Replies
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    The two tailstocks question would seem to be...

    The two tailstocks question would seem to be settled. The older Stark (#183), has a Jarno #4 socket taper. The newer Stark (#2295) has a Jarno #4.5 socket. The tailstock accessories that I have...
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    323472 Well, amazingly enough the pins and...

    323472

    Well, amazingly enough the pins and bolts all lined up. The Myford unit looks good there.

    The Jarno #4 is correct for the tailstock on my older Stark, (#183) but this one is larger ?...
  22. Replies
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    Hi Joe, Here are the pictures... ...

    Hi Joe,

    Here are the pictures...

    323368323369323406

    Finished the mounting nut for the Myford milling attachment. I thought that the plates on the mount were original, but now I think they...
  23. Replies
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    Hi Joe, That sounds great! I'm using what...

    Hi Joe,

    That sounds great!

    I'm using what appears to be a (unmarked) 106 series compumotor stepper. If true, that requires an SX8 drive, but the one I have is an SX6, hence the cautious...
  24. Replies
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    Hi Joe, how's the recuperation going? I've...

    Hi Joe, how's the recuperation going?

    I've been concentrating getting power to the spindle. The junk collection has provided a couple of Compumotor drives and (oversized) motors. The first set...
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    4S collet is the same as "7 Rivett"

    4S collet is the same as "7 Rivett"
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