Cheap PCB Company

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#25
cheap PC company

G' Day rabstq, sorry mate, I cant read the thing either !!!! tried the Alta vista translator, hopeless !!! BUT his boards arev a work of art !!! too nice to solder on !!
by the way, he also provided the caps for free!! those 'blackcaps" and the 2400 uf (instead of the 1K mike) for all 4 boards the boards look great when assembled, best i ever done.
there was a bloke on here, an expat korean, who said he would do it (translate) forget who it was now.
 
#26
SoundNerd,

I meant no disrespect. They are not ripping you off if you think about the costs involved in manufacturing. The 10 piece and less orders are expensive to produce because they must retool for every small order. This is time consuming, and lets face it, time is money. That is why you see the big discounts on large quantity orders, the retooling time is small compared to the size of the job. Another large expense incurred by the manufacturers of pc boards is in dealing with the highly toxic and hazardous chemicals used in the manufacture of the boards. If the boards are made here in the USA the EPA and OSHA (rightfully so) has really started to keep a sharp eye on this industry. It is expensive to dispose of the waste chemicals legally and to protect the workers from the harmful chemicals, not to mention the expensive equipment used in the manufacturing of the boards. All these costs find their way to us the consumer. I think it is cheaper to manufacture PC boards overseas because they do not have the environmental laws and relatively expensive labor we have just yet.
 
#29
kilowattski said:
SoundNerd,

I meant no disrespect. They are not ripping you off if you think about the costs involved in manufacturing. The 10 piece and less orders are expensive to produce because they must retool for every small order. This is time consuming, and lets face it, time is money. That is why you see the big discounts on large quantity orders, the retooling time is small compared to the size of the job. Another large expense incurred by the manufacturers of pc boards is in dealing with the highly toxic and hazardous chemicals used in the manufacture of the boards. If the boards are made here in the USA the EPA and OSHA (rightfully so) has really started to keep a sharp eye on this industry. It is expensive to dispose of the waste chemicals legally and to protect the workers from the harmful chemicals, not to mention the expensive equipment used in the manufacturing of the boards. All these costs find their way to us the consumer. I think it is cheaper to manufacture PC boards overseas because they do not have the environmental laws and relatively expensive labor we have just yet.
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I never thought of all that. Regarding the chemicals, where do I dispose of used Ferric Chloride. It says in the toilet bowl, but I have been told by many people that that messes up the septic tank or the pipes leading to it, can't remember. Will that take it at a toxic waste disposal day?

On another topic, that website BrianGT posted, you can send them your PCB layout and they will do what with it? What exactly is a design check? So, could I send them my boards I wanted made (the bridged opa549) and they will check them?

Thanks, Mike
 
#30
soundNERD said:

Regarding the chemicals, where do I dispose of used Ferric Chloride. It says in the toilet bowl, but I have been told by many people that that messes up the septic tank or the pipes leading to it, can't remember. Will that take it at a toxic waste disposal day?
Click to expand...

It will depend on how many liters are you disposing. A regular 1 liter bottle will dilute so much in the toilet bowl that it won't make any harm on the pipes. You should only be concerned that it doesn't stain the bowl, and for that you will have to let the water running until it's all gone.

Besides that, most sewer pipes are plastic or ceramic, so they won't be affected.

You are right to worry about potential harms, just get the right people to get informed on what to do.


Carlos
 
#31
Be careful.....Some older homes still have cast iron waste pipes. Pour enough ferric cholide down the toilet and someone with existing cast iron waste pipes will soon be needing PVC waste pipes because there will be no cast iron left. If it is caustic enough to etch copper it caustic enough to eat cast iron also. People just don't get how dangerous and toxic these chemicals are and the damage they can cause to themselves and the environment.
 
#35
kilowattski said:
Be careful.....Some older homes still have cast iron waste pipes. Pour enough ferric cholide down the toilet and someone with existing cast iron waste pipes will soon be needing PVC waste pipes because there will be no cast iron left. If it is caustic enough to etch copper it caustic enough to eat cast iron also. People just don't get how dangerous and toxic these chemicals are and the damage they can cause to themselves and the environment.
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The attitude is correct, but you have to have some perspective about it.

We are not talking about tens of liters of this stuff here, but one liter at most every few months. If you dilute it on a pvc bucket before throwing it away, that water and the one from the toilet discharge should leave the ferric chloride completely ineffective.

With that dillution it would take months to corrode anything, and that water is supposed to be waste water, so it shouldn't stay in one place long enough to start anything harmful on any metal in contact with it.


Carlos
 
#38
I found this pcb fab factory is very good. Their 2 layers, 20x20 sq. in size is $75 for 5 pcs. shipped. (more layers or bigger size is higher price, of course!)

That is 5 pcs. min. and at $12 per pcs, shipping is Fedex for $15 within US. The quality and service is very good. They are patient w/ my first order, which I only know Gerber file and nothing else!

http://www.pcbfabexpress.com

For your reference.

Thomas
 
#39
We are not talking about tens of liters of this stuff here, but one liter at most every few months. If you dilute it on a pvc bucket before throwing it away, that water and the one from the toilet discharge should leave the ferric chloride completely ineffective.
Click to expand...

Let me put this in the correct perspective as a Professional Corrosion Engineer. First, Ferric Chloride is highly toxic, even at very low concentrations. Dumping into a sewer, diluted or not, is essentially uncontrolled dumping of poison! :dead: Secondly, ferric chloride even diluted 100:1 is still corrosive enough that dumping it can be damaging to piping over a period of a few years at a rate of a liter a month.

To put it a simply as possible. Dumping Ferric Chloride = BAD Don't do it!:whazzat:
 
#40
Ferric Chloride MSDS

Here are some sources for Ferric Chloride MSDS documents:
http://physchem.ox.ac.uk/MSDS/FE/ferric_chloride_solution.html

http://www.injectorall.com/MSDS199.htm

http://www.jtbaker.com/msds/englishhtml/f1060.htm

http://www.cytec.com/msdsinternet/w...00038'\'CYT'\'MUS'\{ts+'2004-01-09+14:48:45'}
===============

The following,
http://www.artmondo.net/printworks/articles/ferric.htm , contains disposal info: "At this stage the solution is exhausted and requires disposal. This can be effected by the slow addition of either calcium carbonate (whiting) or sodium carbonate (washing soda crystals) - until effervescence ceases. At this point the solution is neutralised and may be disposed of safely."

And from MG Chemical:
http://www.mgchemicals.com/techsupport/ferric_faq.html
 
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