Fusion Technical FAQ ← Knowledge Base What are the PCB panelization rules? What is the depth and width of the v-cuts/grooves? What are the dimensions for Dielectric Separation thickness? What is the thickness of the inner copper layers? What are Blind and Buried Vias? What is the The Min Track/Spacing for 1oz./2oz./3oz. Copper weight What are Plated Half-Holes/Castellated Holes? What size PCBs can Seeed Fusion manufacture? What PCB materials are available in Seeed Fusion? What is the thickness of Fusion PCB? What PCB surface finishes are offered in Seeed Fusion? What color options are available for the solder mask/resist? What is the PCB copper weight? What is Impedance Control? PCB quantity Recommend size for BGA Solder Mask Dam What is the difference between Fusion standard PCB and Fusion Advanced PCB? What should I do if my Gerber files are too big (over 4MB)? Can you make special shape/outline of PCB?