As things progressed, I continued to learn. The company got two 5-axis mills, advanced software, tools, etc. At that point I could make anything that a mill can make. That is when I sold them - goodbye CNC's. I know how it works and now can effectively outsource my parts. There is no machine shop that can tell me anything about how much it should cost, because I already know and the parts were designed with specific tools in mind. If I outsourced from the beginning (i tried) parts take forever and I am at the mercy of the generally poor suggestions the machinists have.
That is possibly the BEST advice i have ever read !
Before you embark on something , make sure you know what it takes. If you don't : prepare to get ripped a new one each and every time !
Many times i have seen situations where, an inexperienced company or person , tries to get a board made and pays through the nose. Simply because they do not know what the real costs are and how the industry works and what the limitations are. The fabs won't tell you because their large income is form the rush jobs. the mass volume jobs are not really profitable and it's a dog-eat-dog world. Want a rush job, they'll be all over you like flies on shit if they smell you are clueless.And you'll end up the turd ...
The same goes for mechanical stuff. Knowing how things are done and applying small tweaks can save you tons of money. And, when in negotiations or talk about a contract you can immediately find out if they are screwing you or not.
A frriend of mine needed a mold made for a simple hinged piece of material. The injection molding company ordered an expensive mold. and billed them for machine time.
Modifying the design just a tiny little bit made the mold much much simpler and the injection time halved. When he confronted the molding company with that their answer was : we are not in the business to teach people mold making or injection molding.
We are in the business of delivering you what you ask on time at the best price. If you ask for something difficult we will still give you the best price for the difficult bit , but we will not tell you how to make it in an easier and cheaper way. That would be cutting our own throat...
And that is the same in EVERY industry.
Make sure you are familiar with production processes and technology , even if it is not your primary activity. just know the basics. Try things out for yourself. follow a few training courses, read literature, get field-specific magazines. talk to the machine operators.
just walking into a company asking them can you make this ... is a sure way to get screwed.
walking in a company telling them : i want this made , so and so , with this process (and with a good idea of the price in mind) will yield a completely different result. Your contractor will go 'damn this guy knows about technology , we better not muck about , he'll know if we try to BS him.
I will give you a real life example.
When i moved to SJ , the division over there did their own design of the PCB and used an inbetween company to have the boards made. this inbetween company used various fabs and you never really knew what fab the board came from. This inbetween company mucked around with your designs to get them run in the cheapest fab. sometimes they would add copper thieving ( on 4GHz boards ? not allowed ... ) , sometimes they would change the layer stack or pick whatever dielectric they had laying around.
once they made me a 3 layer board ... cause they didn't realise there was one plane in there and did not read in the gerber for that plane... once the gold flash was so thin you could rub it off by swiping your finger across the board..
Their prices were outrageous, but nobody in that division knew any better. I had made boards with several fabs before. when i confronted them with their outrageous prices they were pissed off beyond belief.. they had to cut their prices in half !
Another situation was about a year ago. I needed a board with laser via's and 3mil track and gap. The company was going to have these boards made in a local italian shop. 50$ per board... That sounded a lot to me. I was going on a quest to find out more. i called a few of my 'old' board houses in europe. one of them gave me a strrange reply.: "is this the board for your italian division ?"
euh, yes .. why ? oh we have had requests from your contractor xyz to build this for them. this is the price.
so contractor didn't build that board. they didn't even have the machinery to do it so they, in turn , subcontracted it further, without letting us on. They had already made price negotiations...
I had a friend of mine , using a different company address place an order for a similar board using the same technology. HALF price !!!
i confronted them with this .. the answer was : well there is only really two companies in europe that can run this board as it requires machine xyz and there are only two of these in europe. ( maskless imagers )
So i called around here. in a radius of 20 miles there were 5 board shops that could make my boards ... 12$ was the cheapest , 14 $ the most expensive. The european board houses asked 25$ since only they had the equipment and knew you could go nowhere else. our subcontractor billed us 50$ ...
needless to say several heads rolled ....
It pays to know the industry you need services from ...