This collapsing dagger is designed to be printed as one part. Its only 130mm high when printed and the blade extends to 260mm long! It is designed to be printed with a ,4mm nozzle, the blade will be two shells thick.
If you have issues check your retraction settings and make sure your extruder is calibrated. I am working on a video with some info on this to hopefully help some people out as I get a lot of the same questions, so keep eye on my youtube channel.
Credits:
3DPRINTINGWORLD