Is there a way to peacefully detach parts?

In Rovio's Bad Piggies, is there a way to peacefully detach a part of your craft from the rest? By peaceful I mean 'without TNT'.

I would like to, for example, build a rocket and lift my craft. Then detach the rocket parts somehow and then carry on with my craft using other parts.

If anyone has figured this out I would love to know.