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Messages - phangmoh

18
Tools of the trade / Re: High speed Pick & Place for $3600
Quote
just wondering why the SMT50 is considerably cheaper on Taobeo.com?
Taobao is basically for the local market in China. While Aliexpress is like the Chinese version of EBay.
So, there's some markup involved here on Aliexpress as they know people from outside of China only would buy them.
I buy stuff directly from Taobao but not expensive machine though. It hard as I depend heavily on Google translator a lot!
20
General discussion / Re: Unfortunate experience with DirtyPCB
Hi guys,

I just received my first board 2 days ago.
I used the non-protopack package with ENIG finish.
Not as bad bennyboy's board but I can totally agree that the drill hits are way off mark and lots of through hole pads looks like waning crescent of the moon!

Other than that, the soldermask is pretty good with nearly perfect vias hole tenting.
But, it's still usable in my case and after all it's way more cost effective than the fab I used for production copies.

bennyboy,

What is your through hole annular ring size? It sure look thin from the picture.
21
General discussion /
I guess instead of flex circuits, people are more interested in tighter tolerance like 4 mil and smaller annular ring.
I tried to start that (with the high spec PCB) few years but didn't work back then.

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