dozens of times for this purpose. Patent not applied for. One Response to The FUNcube Dongle Pro+: building a PCB with parts on both sides Great tips on building. Really appreciate your sharing the experience. Have used the different paste on each side somewhat successfully. Have done the small parts on both sides then the big parts on one side and back to the other for just the big parts. My circuits are not as compact (and maybe not as complex) as yours but its is still a real challenge to do multilayer double side boards. Thanks for the "behind the scenes". I wish more builders would explain how and why they do what they do. 73, AJ4XM