In a tutorial I have heared that it should be possible to activate the Osnap just temporarly by holing down the “alt” key. But it´s not working for me. Anyone knowes if it is the wrong button or what elso do I miss?
Thanks a lot!
don´t know how and why, but suddnly ist working 
You probably had the Disable checkbox on or off, opposite of what you wanted to do. Then Alt works fine.
However, for anyone, is there a hotkey for enabling/ disabling the “Project” Osnap alone?
Matt