failed models and mistakes

 this is the base off of my physical concept that didn't work properly,  It peeled off the raft as it was printing and began to split part way through the model.  The 3d printers seem to be a bit hit-and-miss with wether the print actually works

the remaining three pieces of the failed models I made. The rest were thrown away before I could get hold of them But over all I think I had to print each piece 2 maybe 3 times before i would get a good model.( excluding the print)

these are all the digital models that I tried to make and and got confused and gave up on.  Some of them were models that I developed  and couldn't make them fit and work together so I had to keep reconstructing the same model so now I can pretty much construct the model from memory.