VIA Plugging Guide

This excellent article covers VIA plugging using inks and soldermask.

IPC-4671, PCB Via Structures, Bumped, Dimpled, Planarized

Plug Via Process Requirements - Epec

Good illustrations for VIA Types

Plug Via Process Requirements - Circuit Board Manufacturing Solutions | Epec Engineered Technologies: PCB Plug Via Process

Design for Manufacturing

AsteelFlash IPC Presentation.pdf (application/pdf Object)

Free Routing : Autorouter

Free Interactive Router

I have not tested this router, I may look at it when time permits.

IPC-2581 File Viewers

IPC-2581 Fab File Viewer

Printed Circuit Board Manufacturing Process

Printed Circuit Board Manufacturing Process

IPC-DR-572A - Drilling GudeLines

IPC-DR-572A.pdf (application/pdf Object)