Search Results - Practical Machinist - Largest Manufacturing Technology Forum on the Web
Close
Login to Your Account

Search:

Type: Posts; User: ballen

Page 1 of 60 1 2 3 4

Search: Search took 0.03 seconds.

  1. Thanks. I have never tried to do a DRO with...

    Thanks. I have never tried to do a DRO with better than 1 micron resolution before, so I did research and thought about this carefully before proceeding. The machine is wonderful, here's a photo...
  2. It's been a while since I last posted about this,...

    It's been a while since I last posted about this, but I finally got the vertical axis scale installed. Some details (photos) are here in the Metrology forum:
    ...
  3. It's more than a year since I last posted about...

    It's more than a year since I last posted about this, but I finally got the vertical axis scale installed. Some details (photos) are here in the Metrology forum:
    ...
  4. I finished the hard part of the installation...

    I finished the hard part of the installation yesterday, and this is now working well. I got no feedback for my first post, so decided to fix the top of the scale (area that is used when grinding...
  5. Thread: Honing 304ss

    by ballen
    Replies
    2
    Views
    266

    Make a box to hold the tube, then cast plaster of...

    Make a box to hold the tube, then cast plaster of paris around the tube to support the outside. Bore out the tube close to final dimension. Break off the plaster and hone away.
  6. Hi Stephen, I think all grinding spindles...

    Hi Stephen,



    I think all grinding spindles have some sort of biased preload, to allow thermal expansion. It's no different on my J&S 540, if I shove the spindle hard from the rear, it moves...
  7. Slightly OT, but same general theme... Here in...

    Slightly OT, but same general theme...

    Here in Germany, there is a guy named Franz Singer whose company sells parts for Deckel milling machines. They have original parts, used parts, and also in...
  8. Best practice: vertical axis DRO scale on a surface grinder

    Dear Metrology group,

    I have a question about mounting a vertical axis scale/encoder on my surface grinder.

    I'm adding a digital readout (DRO) to the vertical axis of my 1986 Jones and Shipman...
  9. Hi Stephen, Thanks for your post. Yes,...

    Hi Stephen,



    Thanks for your post. Yes, one of the reasons I like this is because I don't need to dress as often. The roughing corner 'self-dresses' by breaking down, which preserves the rest...
  10. That didn't occur to me. I've used peening on...

    That didn't occur to me. I've used peening on sheet metal. Would it work on 10mm thick unhardened O2 / 1.2842 / 90MnCrV8?
  11. The move across wheel width and downfeed might...

    The move across wheel width and downfeed might have been faster, I didn't think of that here. Let's see:

    At two microns per downfeed and 350 microns off I need 175 downfeeds. At 12 traverses per...
  12. Thread: FP 1 Dismantle

    by ballen
    Replies
    50
    Views
    4,586

    Example of using a 3d printed part to cast an...

    Example of using a 3d printed part to cast an aluminium one:

    Turning a 3D PRINT Into an ALUMINUM Casting Using LOST PLA │Orangutan Skull - YouTube
  13. Surface grinding technique: roughing corner/finishing corner

    A few years ago, when I got my first surface grinder, Buck suggested a technique that I now use a lot.

    Case in point: I cut a 50 x 400mm strip of 1.2842 (90MnCrV8 or AISI O2 tool steel) from a 10...
  14. Of course Richard and the others are right: you...

    Of course Richard and the others are right: you should mill material off of the carriage to make space for the Turcite/Rulon/Moglice. It would take forever to grind off that much, and you are much...
  15. Grinding the bed will lower the carriage, so it...

    Grinding the bed will lower the carriage, so it won't line up properly with the lead screw and the power shafts. If the carriage needs to also be ground, then that lowers it even more. So the usual...
  16. I painted my Deckel FP2 a year ago (a couple of...

    I painted my Deckel FP2 a year ago (a couple of photos below) so have some comments about this.

    First, regarding paint:
    There is a lot of work involved in painting including scraping off bad...
  17. Replies
    15
    Views
    3,321

    News flash: I've gotten hold of some more Talyvel...

    News flash: I've gotten hold of some more Talyvel literature, and can now identify the exact Silicone fluid being used for damping. It is Dow Corning DC200/200,000 centiStokes (cSt), Rank Taylor...
  18. Replies
    37
    Views
    8,573

    In post #25, I give some details about how to...

    In post #25, I give some details about how to connect the Talyvel 4 to the serial port of a computer. I finally got around to making a serial-port "sniffer" and have now decoded the communications...
  19. Replies
    15
    Views
    3,321

    This central post has two purposes. First, it...

    This central post has two purposes.

    First, it controls the lateral position of the pendulum support frame. The springs of the adjuster plate at the top tend to swing the frame out to one side. ...
  20. Replies
    15
    Views
    3,321

    "Needle flutter" in the Talyvels can be due to...

    "Needle flutter" in the Talyvels can be due to insufficient damping of the pendulum. This is easy to adjust and I thought that I would document the procedure here.

    The damping comes from a small...
  21. Replies
    34
    Views
    2,568

    If the fuse was the original German one from the...

    If the fuse was the original German one from the time of manufacture, then it should have an F, T, or MT on the fuse.

    F = flink: fast-blow
    T = träge: slow-blow
    MT = mittelträge: in between...
  22. Replies
    34
    Views
    2,568

    On my VRZ there are three transformer...

    On my VRZ there are three transformer secondaries, one for regulated 5V, one for unregulated 5V, and one for regulated 12V.

    If your TNC is similar, I would unsolder one end of each of the...
  23. Replies
    12
    Views
    1,907

    That's good news, as it means that both the...

    That's good news, as it means that both the Metabo ST EP 564 and ST EP 700 Quick have compatible motors.
  24. Replies
    3
    Views
    841

    The oil pump in the base has two tubes that come...

    The oil pump in the base has two tubes that come out and go up to the top. One is the input and the other is the output to the pump. They have identical connectors. Is it possible that those two...
  25. Replies
    34
    Views
    2,568

    What siggi said. Small board is a filter that...

    What siggi said. Small board is a filter that stops digital noose from going back down the power line. Unsolder all xformer secondaries and reattach one at a time. As siggi said, problem is likely a...
Results 1 to 25 of 1500
Page 1 of 60 1 2 3 4