Page 2 of 2 FirstFirst 12
  1. #11
    Hank,
    I might be able to get the board repaired for you if Jonathan cant help you out. Drop me an email if you cant get it sorted.

    Ian

  2. #12
    Quote Originally Posted by Web Goblin View Post
    Hank,
    I might be able to get the board repaired for you if Jonathan cant help you out. Drop me an email if you cant get it sorted.

    Ian

    Hi Ian,

    That's useful to know ....alas, at the moment I'm unemployed, so it''ll stay bust until....

    1. I find a job
    2. I find a schematic & fix it myself!

    or more likely....

    3. "For sale, one mini lathe in need of repair"

    rgds,
    Hank.
    Last edited by HankMcSpank; 01-02-2012 at 10:59 AM.

  3. #13
    Hank,
    if you cover the postage costs I'll have a look at it for free. Its always good to have a favour in reserve:naughty:

    Ian

  4. #14
    Quote Originally Posted by Web Goblin View Post
    Hank,
    if you cover the postage costs I'll have a look at it for free. Its always good to have a favour in reserve:naughty:

    Ian
    Hi Ian,

    That's very gracious of you ...when it went bang, I went to change the fuse but my lathe's fuse holder disintegrated (so I can't even try it since the large bang) ...let me at least order a replacement 32mm chassis fuse holder up & fit it, dry the control box out (very damp in my workshop) , visually inspect the pcb (it's too parky to go up in my loft & do all this right now!), if still no go, then I'll gladly pay the P&P for you to look at the board....many thanks.


    Meanwhile, back to my "getting some FR4 copper board to mill evenly will be the death of me" saga ......so after spending SEVENTEEN QUID on a fly cutter, turning it down to fit in my CNC spindle, then setting it off on a bed levelling exercise...imagine my excitement/anticipationat mill my first 'bed levelled' pcb .....sigh, EPIC FAIL!

    I have the V cutter cut depth (final depth) set to about 0.2mm ....I saw perfect isolation as the cutter did it's thing on the left hand side of the board...then alas as the spindle traversed slowly 80mm over to the right...I saw the tell tale sign of the isolation route getting thinner & thinner....then the track disappeared altogether! Of course what this means is that my machine's bed (thankfully acrylic atop of the ali bed & therefore expendable) is about 0.3mm lower on the right hand side of the bed vs the left hand side.

    So then the penny dropped (I think)....if my fly cutter is only cutting on one side of it's travel 9the right hand side) ....then I need to take the cutter all the way past my bed's left hand extremity ...and then some, to ensure the fly cutter cuts it ....my bed levelling g-code obviously assumes that the cutter cuts evenly around its full rotation.

    So now I have an unlevel bed - the only way I can think to rescue this situation is to use something like 6mm endmill & run that on a levelling routine ....at least the Z plane being out of tram shouldn't impact that too much....once my bed is level with the 6mm endmill, then the fly cutter back on to try & get my Z plane into tram....sound like a plan? (if so, can anyone lend me a 6mm endmill?!!!)

    re pcb milling, thankfully, I now have a USB-CNC hardware card on its way to me, which will at last (hopefully) allow me to mill even pcbs with an uneven bed, this just in from the program's author (who I pestered to death to get this implemented).....

    http://www.youtube.com/watch?v=0jGY92S8bxM (thankfully, my bed isn't as warped as his demo!)
    Last edited by HankMcSpank; 01-02-2012 at 09:02 PM.

  5. #15
    Hank,
    no problem. Let me know how you get on.

    Ian

  6. #16
    I was going to offer to have a look at the board too :lol:. Lets see some photos first...

    Quote Originally Posted by HankMcSpank View Post
    So now I have an unlevel bed - the only way I can think to rescue this situation is to use something like 6mm endmill & run that on a levelling routine ....at least the Z plane being out of tram shouldn't impact that too much....once my bed is level with the 6mm endmill, then the fly cutter back on to try & get my Z plane into tram....sound like a plan? (if so, can anyone lend me a 6mm endmill?!!!)
    Sounds sensible to me. I'll post you a 6mm single flute carbide cutter if you like... they've useful for everything anyway.

    Theoretically if you're just using the surfacing from the 6mm cutter as a reference to dial in the Z-axis you could just make the 6mm cutter cut a ring to save time. In practice it might be best to surface the whole lot anyway.

  7. #17
    Quote Originally Posted by Jonathan View Post
    Sounds sensible to me. I'll post you a 6mm single flute carbide cutter if you like... they've useful for everything anyway.
    Many thanks Jonathan...I'll PM you.

  8. #18
    Posted ... along with something else I think you'll find useful

  9. #19
    Quote Originally Posted by Jonathan View Post
    Posted ... along with something else I think you'll find useful
    ...ooh the anticipation, it's like December all over again!

    This is a fantastic forum full of great people who are always willing to help....thanks to you all.

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Entry level Probe
    By Leadhead in forum Probing, Digitizing & Scaning
    Replies: 5
    Last Post: 09-10-2013, 07:55 AM
  2. Acrylic or mdf I can cnc
    By rainboweyes in forum Opportunities Available & Sought
    Replies: 0
    Last Post: 19-02-2013, 02:09 AM
  3. help needed going to the next level
    By luke11cnc in forum Computer Software
    Replies: 8
    Last Post: 20-09-2012, 08:53 AM
  4. NEW MEMBER: Just joined, hobby level
    By cncgcg in forum New Member Introductions
    Replies: 12
    Last Post: 03-12-2011, 02:32 PM
  5. Level Y Axis
    By sfallan in forum Machine Discussion
    Replies: 3
    Last Post: 26-09-2010, 12:52 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •