Homebrew PCBs

Looks very nice, but large and expensive for my purposes.  I was given 
the XY stage, and the rest was built from parts on hand.  The laptop 
cost me $8.  I don't do enough boards to justify any big expenditures, 
although I DID buy a $25 laminator from MyBinding.com.

Kerry


Spencer wrote:
> I was looking at getting this for my PCB drilling. 
>
> http://www.shapeoko.com/
>
>
> ________________________________
>  From: Kerry Wentworth <kwentworth@...>
> To: Homebrew_PCBs@yahoogroups.com 
> Sent: Tuesday, April 3, 2012 7:40 AM
> Subject: Re: [Homebrew_PCBs] DIY CNC pcb drilling
>  
>
>   
> Very nice!  Mine is a bit different (cruder).  I used an industrial XY 
> stage, 6"x6" with stepper motors, mounted on the end of my Sherline 
> mill.  A homebrew Z stage drives a Dremel tool up and down.  I have not 
> yet optimized for speed, as I have a limited number of bits on hand.  I 
> use a PIC16F876 to accept (a subset of) CNC commands and drive the 
> steppers.  A DOS laptop reads the Excellon files and generates CNC 
> commands.  It also has a jog mode that allows finding the corners of the 
> board and rotates the coordinates to compensate for misalignment of the 
> transferred artwork relative to the axes.
>
> I did all of the hardware and software myself.
>
> Kerry
>
> DJ Delorie wrote:
>   
>> Been working on this project for a long time, finally got some results...
>>
>>   DIY CNC 409 0.0145" holes in 12 minutes
>>   www.youtube.com/watch?v=SR1y6Eq19EU
>>
>> The CNC machine uses three brushless DC motors instead of steppers, I
>> had to make my own controller boards, write the firmware, build the
>> table... many steps.
>>
>> controller page: www.delorie.com/electronics/bldc/
>> photos: www.delorie.com/photos/cnc/ (including close-ups of the drilled board)
>>
>> I have an excellon-to-gcode script for drills if anyone's interested,
>> although there's some new features I still want to try, and I want to
>> see how fast I can get the drilling cycle to go without breaking any
>> bits :-)
>>
>>
>>
>>
>>
>>