3" x 4" FR1 Substrates (Pack of 6)$14.99 USDSKU: 1000281
6 substrates included
When you start to run out of space in your design, migrate over from the small substrates to these.
These substrates are made of FR1 - which means they don't contain fibreglass. There is less wear on the drill bits.
Download the template and incorporate them into your design here.