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???
04/25/12 20:51
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 		 #187239 - it happens
Responding to: ???'s previous message
It happened to me once, after writing a long post, everything was lost due to computer crash.
Terrible feeling.
Another question, how do you set the 0 for Z-axis to touch the board.
My friend taught me this trick by putting a paper on the board and lowering the Z axis slowly and keep moving the paper until it gets stuck, its better than nothing but I'm thinking of making electrical connection with the board and the bit so that the machine knows when it touched the board. I then zero the z Axis, then left it up 1mm then zero it again and reference the bit to the lower left bottom of the workpiece.
I'm sure Mach3 has some options to auto reference, have to keep experimenting.
My machine doesn't have limit switches, maybe I should add them manually.
Mahmood


List of 74 messages in thread
TopicAuthorDate
CNC            01/01/70 00:00      
   Enjoy :)            01/01/70 00:00      
      Having fun            01/01/70 00:00      
   Congratulations            01/01/70 00:00      
      We looked at buying one of those            01/01/70 00:00      
         Me Either!            01/01/70 00:00      
            We use a variety            01/01/70 00:00      
               do not be lazy,Mr.Smith            01/01/70 00:00      
               prototype cost and turnaround            01/01/70 00:00      
                  I'll find the ads            01/01/70 00:00      
                     googled            01/01/70 00:00      
                        Ebay deal            01/01/70 00:00      
                           What about this one then...            01/01/70 00:00      
                              Follow up on prototype board shops            01/01/70 00:00      
                                 international pcb houses            01/01/70 00:00      
                                    PCB Houses            01/01/70 00:00      
            working out of town            01/01/70 00:00      
      CNC bits            01/01/70 00:00      
         answering            01/01/70 00:00      
            it happens            01/01/70 00:00      
               what other tools required?            01/01/70 00:00      
                  a new trick zeroing Z axis            01/01/70 00:00      
                     Z ref            01/01/70 00:00      
                        Collet type            01/01/70 00:00      
                        Z axis reference            01/01/70 00:00      
                           Vacuum            01/01/70 00:00      
               this sort of thing happens often, from my experience            01/01/70 00:00      
                  ctrl+A, crtl+C, submit            01/01/70 00:00      
         tools            01/01/70 00:00      
            holding the PCB            01/01/70 00:00      
               Holding the PCB            01/01/70 00:00      
                  Carbon steel?            01/01/70 00:00      
                     Not tungsten carbide            01/01/70 00:00      
                        Just carbide is a bit lazy slang for tungsten carbide            01/01/70 00:00      
                           If you say so.            01/01/70 00:00      
                  Plate through holes            01/01/70 00:00      
                     plating holes            01/01/70 00:00      
                     plated through holes cont.            01/01/70 00:00      
                  2 point registration system            01/01/70 00:00      
                     Need not be exactly in middle.            01/01/70 00:00      
                        is it that simple?            01/01/70 00:00      
                     2-pin registration            01/01/70 00:00      
                     Fine pitch milling            01/01/70 00:00      
                        Solder Mask            01/01/70 00:00      
                           solder mask and legend            01/01/70 00:00      
                              too much work            01/01/70 00:00      
                                 Much work            01/01/70 00:00      
                                    My CNC            01/01/70 00:00      
                                       Is That...            01/01/70 00:00      
                                       which cad did you use?            01/01/70 00:00      
                                          Limit Switches            01/01/70 00:00      
                                             Will do            01/01/70 00:00      
                                                Little Plates            01/01/70 00:00      
                                             MEchanical limit switches            01/01/70 00:00      
                                       Your project            01/01/70 00:00      
                                          This:            01/01/70 00:00      
                                             very cool!            01/01/70 00:00      
                                             Funnel            01/01/70 00:00      
                                                Funnel !            01/01/70 00:00      
                                                   Lawyer or Solicitor - Not ! !            01/01/70 00:00      
                                                      RIght            01/01/70 00:00      
                                    vacuum pick and place tool            01/01/70 00:00      
            90 degrees bits            01/01/70 00:00      
               Z-axis depth control            01/01/70 00:00      
                  stepper             01/01/70 00:00      
                     z-axis control            01/01/70 00:00      
   oiling            01/01/70 00:00      
      lubrication            01/01/70 00:00      
      Lube            01/01/70 00:00      
         ballscrews            01/01/70 00:00      
            Ballscrews            01/01/70 00:00      
               Sometimes it's useful for controlling dynamics            01/01/70 00:00      
            ballscrews & table slides            01/01/70 00:00      
   LINUXCNC            01/01/70 00:00      

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