Homebrew PCBs

Dave Mucha wrote:
> --- In Homebrew_PCBs@yahoogroups.com, "ballendo" <ballendo@y...> 
> wrote:
> 
>>Dave,
>>
>>Here's a copy of the FIRST line ON the home page:
>>
>>  Making, etching, soldering printed circuit boards yourself.
>>
>>See that third word there... 
>>
>>Next, The list OWNER has approved this thread. And posted as such 
>>already. Please respect what the LIST OWNER has said.
> 
> 
> The whole question arose when a member posted that this is off topic, 
> and I agreed.
> 
> Solder paste dispenser mechanical design is not even close.  
> Mechanical etching is a legitimate and viable method of MAKING 
> boards.   Yes the list owner will allow it, but that does not mean 
> the responses will be the best for the person wanting to build the 
> unit.
> 
> How about we agree that neither you nor I post on the solder paste or 
> pic-and-place designs as we can see how the other members would 
> answer this topic ?  (for a week or so ? )
> 
> I imagine it will get near zero play on this list.

I happen to have designed the dispenser and pick-place
machine i want. I would have found such discussions interesting
here.

> Yes, you  are interested, and I am intereted, but this is not the 
> mechanical design list for this topic.  Neither by the depth of 
> member knoledge and experiance, nor the stated purpose of this list.

But what fun is a pcb without components.

> It IS a topic that would have dozens and dozens of professional 
> responses on both your list and CCED.  Probably even have sites to 
> people who have done it and personal experiances from those who 
> already worked out the bugs.
> 
> I would make a screw plunger, that would need to be incremented as 
> paste was diplaced from the syringe.  the A axis location would need 
> to be advanced incrementally.  The next logical step is software and 
> the next after that is troublshooting.  I think you mentioned a 
> solenoid or compressed air ?  Neither of us have taken it to the 
> final stage and worked out the bugs.

I have 2 solenoids, leavers, and plungers.

> To keep it on here will eventally become a dis-service to the person 
> making the unit.
> 
> And that, my friend, is why there are so many lists, and why both you 
> and Steve have a couple dozen lists between you !