I found the project in PCBWay open source community--https://www.pcbway.com/project/shareproject/PCBWAY__Ruler_design.html. I placed order and after 7 days receive it.To be honest,the matte black is beautiful. But they forget the note that the serial small holes should be immersion gold,now only 3 holes are immersion gold. Anyone tried PCBWay after-sale service?
I mean their after-sale service
I remember they have online after-sale system.You can send mail to their sale directly or clieck "open dispute". Yes,The ruler is made wrong,check mine from them.
Hi Andrew, Maybe you can try EzPCB next time.Even their price is not the cheapest,but the quality and service are excellent.They provide PCB+Assembly service.Please try to contact www.ezpcb.com if you are interest. Nila