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  1. WakelessFoil

    Milling Thin Copper (Warping)

    Just within maybe .010" end to end, would be ideal. We are using a 3-flute HSS Ti coated endmill with plenty of coolant. Thank you all for the replies. I found an easy way to get the bar reasonably straight with the use of a makeshift bender constructed from a table vise. See video below. I...
  2. WakelessFoil

    Milling Thin Copper (Warping)

    We are attempting to mill a "T" profile on 24" long copper bars that are roughly 3/8" thick and 1-1/4" wide. You can see our set up in the attached images. I knew milling copper was a pain from what other machinists have told me. I followed all the suggestions; use a 3-flute cutter, use high...
  3. WakelessFoil

    Inventor wants to help us on his jobs in shop+sign NDA

    I am not that literate when it comes to policy and law. However, I would imagine that it would be a good idea to have him sign a liability waiver. In addition to that I would make a clear effort to make the workspace as "incident-proof" as possible to show that we are not trying to screw him...
  4. WakelessFoil

    Inventor wants to help us on his jobs in shop+sign NDA

    It likely wasn't the best term to use for the guy, I know how the vague term "inventor" can make some who works in this field cringe. He does not refer to himself as a inventor. He is an engineer and businessman who wants to construct a prototype. Refer to my earlier response.
  5. WakelessFoil

    16C to 5C Collet Adapter Not Working with Hydraulic Draw Bar

    Thank you guys for the input, upon further inspection the drawbar does not move an inch, but more like 1/4"! A lot less than I thought. I have both screwed in as far as they will go, and the adapting collar is shortened as much as I could. Still the collet barely closes at all. If I take the...
  6. WakelessFoil

    16C to 5C Collet Adapter Not Working with Hydraulic Draw Bar

    We have a 16C to 5C collet adapter that we are trying to use in our CNC lathe. Despite repeated attempts to adjust the moving part we can not get the 5C to close in the adapter. I suspect that the hydraulic drawbar, that moves only about 1/4 inch, is not retracting enough for this adapter to be...
  7. WakelessFoil

    Inventor wants to help us on his jobs in shop+sign NDA

    I am the machinist/engineer working with the OP on this project. Yes, the term "Inventor" sounds sketchy when such a title is self proclaimed, but that is just what we are calling him. The client is a electrical engineer with a PhD in physics. He owns a contracting company that develops...
  8. WakelessFoil

    Surface Grinder Ripples

    We ran another test today and I filmed part of the cut. We redressed the wheel with a new sharper diamond, used a super accurate dial indicator to confirm cut depth, and drastically increased coolant flow. I think all of this helped but there are still very faint "ghost lines" in the finish...
  9. WakelessFoil

    Surface Grinder Ripples

    Thank you all for the advice and input! I will try to answer all the questions in one post so I'm not spamming the forum. I was taking the shallowest depth of cut I could get, this was a bit hard as the elevation handle is extremely sensitive and only designates .001" increments, no tenths. At...
  10. WakelessFoil

    Surface Grinder Ripples

    Thank you all for the replies! I'll be sure to answer all when I get some free time this weekend. I wanted to quickly post an update. We dressed the wheel, and sped up the side-to-side feedrate. In my head I figured slow meant finer surface finish, but I was wrong. There is still some visible...
  11. WakelessFoil

    Surface Grinder Ripples

    Thanks for the input. The wheel does likely need to be dressed. I used degrees because I was only trying to stress the sensitivity of the elevation handle. I am not moving the head 5 thou. The machine did make decent cuts before. Like I said I think the issue has something to do with my...
  12. WakelessFoil

    Surface Grinder Ripples

    I am new to surface grinding and have been experimenting with our Proth surface grinder on a test piece of steel. I have the feed rate pretty slow and the cut depth is very shallow (although the steel stock is not perfectly flat with high and low spots of a few thou). When I go to make a pass...
  13. WakelessFoil

    Series I Variable Speed Unsettling Noise

    One of our more frequently used machines, a Bridgeport Series I, has been making some odd knocking sound from the head when going above ~1200 RPM. Has anyone heard something like this? How did you go about fixing it? We lube this machine per the maintenance schedule. VIDEO: Thanks, Justin
  14. WakelessFoil

    Fanuc 3M Limited Memory / Drip Feed Solution

    Unfortunately the 3M has a max of 32KB (I think?). We cant find any memory expansion boards for this machine. All for the 6M and up.
  15. WakelessFoil

    Fanuc 3M Limited Memory / Drip Feed Solution

    Yes. He gave me some good information but sadly they do not offer anything for the Fanuc 3. :(
  16. WakelessFoil

    Fanuc 3M Limited Memory / Drip Feed Solution

    Memex wants to sell us a similar piece of software for $300. I'll have to look into Filesplitter. This could also be accomplished using a C++ program to read in data and split it into sequential text files. For my drip feeding idea, I really need it to include that spare signal (M17/18) at the...
  17. WakelessFoil

    Fanuc 3M Limited Memory / Drip Feed Solution

    I had not thought of this. The motherboards look very similiar. I will ask around to see if something like this has been done before and how easy it would be. We may take you up on that offer. Thanks! Justin
  18. WakelessFoil

    G28 Reference Point Return (Programming)

    I got it to run properly now. The issue was that the G91 was doing nothing in MDI mode. Ran as expected in AUTO. G28 G91 X0 Y0 Z0; Now I just need to modify my post to home all 3 axis instead of just the Z.
  19. WakelessFoil

    Fanuc 3M Limited Memory / Drip Feed Solution

    I posted this to the CNCzone forum but I thought I should bring it up here since it seems like there's more activity here on PM. We are searching for a solution to allow our vintage Fanuc 3M-A equipped milling machine to run more complex programs. From the factory the Fanuc 3 does not allow...
  20. WakelessFoil

    Good shop lights for 8ft ceiling?

    May have already been said here but I found these to be a pretty good and versatile lighting solution. We have 8 foot ceilings in our 30 x 30 garage and 9 of these lights strung together consume little power but are bright enough to blind the neighbors. Once in while they'll flicker but hey...

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