Is it possible to order PCBs with three layers instead of four? The board I'm working on will likely need a third but probably not a fourth.
Is it possible to order PCBs with three layers instead of four? The board I'm working on will likely need a third but probably not a fourth.
Using all 4 layers is better for manufacturing because it balances out the copper.
Havng one layer with no copper may cause the board to warp. Maybe not a problem in a small, one-off prototype but can cause reliability issues in high volume and/or large area PCBs.
:)
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
three layers price is the same as 4 layers. and we will add a empty layer for it.
So you can draw 3 layers, but we would better to use 4 layers, it is easy to layer out