Advanced circuits does business under various names on the net 4pcb.com, 33each.com , 66each.com and one or two others.
- Depending on which pathway you use to enter their site the price quoting is different.. that's pretty funky ... and a bit shady...
- they got 'odd restrictions' . like no slotted holes. or 'routed to overall size only'. that is just plain unusable. If you have something like a DC power jack on the board you are already screwed as you need 3 slotted holes... ( unless you are willing to live with 3 massive holes you need to fill with solder to connect the flat pins). and why not mill the exact contour. Not everyone designs rectangular boards.. My boards for hobby projects go in a case and i'd like to see them milled to exact contours , including notches and cutouts for the screw passthroughs.
Besides , slots and cutouts do not cost them anything extra. It's all cnc anyway and all pcb makers use either Ucamco ( ex Barco-Mania ) , Valor , or Genesis as front-end for production, and those software tools can all detect these things automatically .. provided it is done right... And that may be the only caveat... I guess they don't want to field the endless questions and problems coming from people that don't understand the process of defining these things the right way. Decent cad software creates automatically split NC-Drill for slotted holes. Same for board countouring.
They don't want arrays , no slots no this no that ... compared to Sierra where anything goes.
- they 'glue' you with cheap price ( which is not that 'cheap' ) and then raise the next runs up ...
I have asked them quotes a number of times for boards i make at work (4 layer , 3.5 mil track gap , 6mil finished drill ... they are 15 to 25 % more expensive than the same board run at local PCB shop here in SV , which is a VERY expensive area in terms of building and labour... (SV = silicon valley). and some of the plating they have to outsource.. simple things like lead-free HASL they don;t have in-house. Same for OSP ..
I'd actually have to give them another try... its been over a year.
- The '33$' deal is actually a 132$ + tax + shipping deal ... because you need to order minimum 4 boards ... lets do some maths . 60 square inches max .. A default panel in the PCB production worlds is 18x24 or 432 square inches , pull out the tooling coupons and you have 350..380 square inches of usable material left. . Easy to fit 240 square inches.. so essentially you pay for running 1 panel... and they run that panel at a loss.. so it makes me wonder how many of these '33$' jobs they will accept from you ...
I also wonder if they would make me 4 boards of 2 inch by 30 inch for that price
-grin- there's got to be other 'gotcha's in there because it doesn't line up. If it looks too good to be true ... you know ..
Now, that is the SAME for ALL these low cost board makers out there. They are all in a race to the bottom.
Here's how you find out what the true panel cost is : you run a number of quotes by increasnig the board size gradually and keeping the number of boards constant. at a certain point you will end up going over the single panel price and the price will jump up substantially. Go one step back and you know what the panel cost is.
And then you can start comparing. I order 4 boards of 2 inch by 2 inch and they are 33$ each. But if i order 4 boards of 6 x10 they are still 33$ each... so they spread panel costs between projects...
It takes a lot of skill to plan this one out and still run a break-even. they plan out what kind of 'mix' they will run on an average week and then come up with a price , but this is not maintainable in the long run.
It's all buyer-beware ... I do 15 to 30 board runs a year at work and 4 or 5 for hobby and learned that you have to be very vigilant when dealing with pcb makers.. i have gotten burned a number of times. ( starting at low prices and jacking them up run after run , ending up with boards that were actually subcontracted in the far east as opposed to made on-shore , nickel and diming left and right). I prefer to pay an honest prices. For work i establish panel prices at the beginning of every year. I know my board sizes and know how many will go on a panel. This makes my budgeting easy. I've used Sierra for 7 years now and never ever had a single problem. They are on time and have perfect quality. But, they are not the cheapest. and no , i don't use them for hobby. Too expensive. But then again , that is not their business.
No matter how you twist or turn it , the cheapest is a chartered service that combines multiple projects on a panel like iteadstudio and seeedstudio do. there simply is no beating that... even including shipping using UPS. But i don't know any US companies that do this. you could only survive that if your manual labor cost is zilch ...