| Joseph Hebert 05/01/12 23:54 Read: 330 times Okemah, Ok United States |
#187281 - Fine pitch milling Responding to: Mahmood Elnasser's previous message |
Hi Mahmood,
I thought I remembered posting a picture of one of my old prototypes. In particular, I posted a photo showing the CP2102 land pattern I milled. As I said, it's the smallest one I can do reliably with my standard tool. Here's a link to the old post. http://www.8052.com/forum/read/162836 My first suggestion, to learn the limits of your machine, would be to do some tests to measure the precision and repeatability of your machine. If you send the bit to coordinates (x, y), how close to (x, y) do you actually get? How repeatable is your machine? Knowing this will let you know how fine a feature you can expect to machine. If you're milling a 0.004" trace, but when you go back to that coordinate your machine is off by 0.004", your trace gets obliterated. Another problem might be, as Per pointed out, dull bits. If your bit isn't cutting efficiently enough for your feed rate you could be just pushing fine traces out of place. Of course, one you do that there's nothing holding the trace in place and the bit will chew it right up. But in any case, the first thing you need to know is how precise and repeatable is your machine. Good luck, Joe |
| Topic | Author | Date |
| CNC | Mahmood Elnasser | 04/14/12 10:43 |
| Enjoy :) | Oliver Sedlacek | 04/16/12 04:14 |
| Having fun | Mahmood Elnasser | 04/17/12 13:53 |
| Congratulations | Joseph Hebert | 04/16/12 09:42 |
| We looked at buying one of those | Jez Smith | 04/16/12 14:09 |
| Me Either! | Joseph Hebert | 04/16/12 14:17 |
| We use a variety | Jez Smith | 04/17/12 00:50 |
| do not be lazy,Mr.Smith | Stefan KAnev | 04/17/12 11:28 |
| prototype cost and turnaround | Joseph Hebert | 04/17/12 13:31 |
| I'll find the ads | Erik Malund | 04/17/12 14:14 |
| googled | Erik Malund | 04/17/12 14:22 |
| Ebay deal | Steve M. Taylor | 04/17/12 15:08 |
What about this one then...  | Robert Revens | 04/25/12 12:59 |
| Follow up on prototype board shops | Joseph Hebert | 06/22/12 08:41 |
| international pcb houses | Mahmood Elnasser | 06/22/12 14:13 |
| PCB Houses | Joseph Hebert | 06/22/12 16:55 |
| working out of town | Erik Malund | 04/17/12 07:20 |
| CNC bits | Mahmood Elnasser | 04/25/12 06:37 |
| answering | Joseph Hebert | 04/25/12 11:38 |
| it happens | Mahmood Elnasser | 04/25/12 14:51 |
| what other tools required? | Mahmood Elnasser | 04/25/12 15:00 |
| a new trick zeroing Z axis | Mahmood Elnasser | 04/26/12 12:26 |
| Z ref | Steve M. Taylor | 04/26/12 13:10 |
| Collet type | Mahmood Elnasser | 06/22/12 14:27 |
| Z axis reference | Mahmood Elnasser | 07/02/12 01:40 |
| Vacuum | Per Westermark | 07/02/12 02:35 |
| this sort of thing happens often, from my experience | Richard Erlacher | 05/01/12 07:38 |
| ctrl+A, crtl+C, submit | David Brown | 09/19/12 01:34 |
| tools | Joseph Hebert | 04/26/12 14:11 |
| holding the PCB | Mahmood Elnasser | 04/27/12 00:27 |
| Holding the PCB | Joseph Hebert | 04/27/12 14:06 |
| Carbon steel? | Per Westermark | 04/27/12 20:16 |
| Not tungsten carbide | Joseph Hebert | 04/28/12 16:37 |
| Just carbide is a bit lazy slang for tungsten carbide | Per Westermark | 04/28/12 21:41 |
| If you say so. | Joseph Hebert | 04/28/12 22:30 |
| Plate through holes | Mahmood Elnasser | 04/28/12 11:05 |
| plating holes | Joseph Hebert | 04/28/12 16:46 |
| plated through holes cont. | Joseph Hebert | 04/28/12 22:37 |
| 2 point registration system | Mahmood Elnasser | 04/30/12 14:27 |
| Need not be exactly in middle. | Per Westermark | 04/30/12 16:05 |
| is it that simple? | Mahmood Elnasser | 05/01/12 00:27 |
| 2-pin registration | Joseph Hebert | 04/30/12 23:40 |
| Fine pitch milling | Joseph Hebert | 05/01/12 23:54 |
| Solder Mask | Mahmood Elnasser | 05/02/12 10:28 |
| solder mask and legend | Joseph Hebert | 05/02/12 11:47 |
| too much work | Mahmood Elnasser | 05/02/12 15:54 |
| Much work | Joseph Hebert | 05/06/12 15:50 |
| My CNC | Steve M. Taylor | 05/07/12 06:57 |
| Is That... | Michael Karas | 05/07/12 10:30 |
| which cad did you use? | Mahmood Elnasser | 05/07/12 15:58 |
| Limit Switches | Michael Karas | 05/08/12 00:22 |
| Will do | Mahmood Elnasser | 05/08/12 10:55 |
| Little Plates | Michael Karas | 05/08/12 16:40 |
| MEchanical limit switches | Steve M. Taylor | 05/11/12 12:50 |
| Your project | Joseph Hebert | 05/10/12 06:18 |
| This: | Steve M. Taylor | 05/11/12 12:38 |
| very cool! | Joseph Hebert | 05/11/12 13:29 |
| Funnel | Michael Karas | 05/12/12 12:37 |
| Funnel ! | Steve M. Taylor | 05/13/12 13:04 |
| Lawyer or Solicitor - Not ! ! | Michael Karas | 05/13/12 15:43 |
| RIght | Steve M. Taylor | 05/14/12 12:16 |
| vacuum pick and place tool | David Brown | 09/19/12 01:29 |
| 90 degrees bits | Mahmood Elnasser | 09/14/12 04:22 |
| Z-axis depth control | Joseph Hebert | 09/15/12 22:53 |
| stepper | Mahmood Elnasser | 09/16/12 06:34 |
| z-axis control | Joseph Hebert | 09/16/12 15:37 |
| oiling | Mahmood Elnasser | 09/29/12 14:49 |
| lubrication | Joseph Hebert | 10/01/12 10:41 |
| Lube | Steve M. Taylor | 10/05/12 14:47 |
| ballscrews | Mahmood Elnasser | 10/06/12 00:21 |
| Ballscrews | Steve M. Taylor | 10/06/12 14:00 |
| Sometimes it's useful for controlling dynamics | Richard Erlacher | 10/06/12 14:08 |
| ballscrews & table slides | Joseph Hebert | 10/06/12 15:15 |
LINUXCNC | Mahmood Elnasser | 10/19/12 02:08 |