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Joseph Hebert
04/16/12 09:42
Read: 1196 times
Okemah, Ok
United States


 
#187178 - Congratulations
Responding to: Mahmood Elnasser's previous message
Hi Mahmood,

Congratulations. I too use a machine to produce boards, an LPKF C60. So I can tell you from experience that Oliver is correct on both counts. Breaking the tools is part of the learning curve, as is learning that pushing them past their functional lifetime is more costly than thrifty. Also, you can indeed get a lot of boards made for the cost of the machine. Moreover, the consumables you will use making your own boards are not free. That means that you are probably never going to realize any savings over the lifetime of the machine.

But don't take this as cause to be discouraged. There are other reasons to make your own boards. I have two. One is to keep proprietary information proprietary. The other is to get my boards when I need them. The turnaround time for outsourced boards is either weeks, or the cost is exorbitant. In fact, when done using the cost of comparable turnaround times, the CNC machine cost analysis becomes quite favorable.

There are a couple more things you'll need to think about in the near future, and Oliver pointed at them with his comment about plated through holes. You will need to look into your options for providing continuity between layers. If you only do two layers, it's technically possible to solder jumpers through the vias and holes, but with high part/via counts it becomes very impractical. As long as you don't go more than 6 layers you can use a conductive paste or epoxy to "plate" your through holes. For more than 6 layers (fewer with high aspect ratio holes) and you will need to set up to do electroplating.

Of course, if you do more than 2 layers you'll have to set up a lamination press.

Finally, you are going to need to set up to apply a solder mask, especially if you are making boards with fine pitch parts. It's just not practically optional.

Let me know if you run into any problems I can help with. Been there done that, as they say. Good luck.

Joe

List of 74 messages in thread
TopicAuthorDate
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      

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