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4 Threads found on edaboard.com: Back Drilling
HXP circuit, a chinese ISO&UL licensed PCB manufacturer, can make rigid, flex, rigid-flex, metal boards(ALU and Cu substrate board) We also have rogers material, can do back drilling and gold finger. Prototype and mass production is ok. Our website is If any questions, please contact me at sales01@hxpcircuit.com[
I believe, your back drilled vias will also use an unique padstack, so it may be appropriate to define it as blind vias which also involves separate drill files.
what is back drilling and why is it preffered. thanks
I think did an article on pcb drilling machine a while back go to and do a search on pcb cnc or some such