For the most part this is an easy print.  The only piece that requires supports is the hand/shaft.  I printed it upside down with supports.  I was able to print the hatch without supports.  It might turn out smoother if you use them.  Once everthing is printed the hand/shaft will need some cleaning up and you will need to make sure you clean out the shaft hole really well.  It needs to swing freely around the main crank shaft.  Make sure all the holes are free of debree.  When assemblying the crank shaft, glue the support block in the bottom of the support first before gluing it to the bottom of the coffin,  then you will be able to add the other parts of the crank.  The long piece goes in first.  You will have to angle it a little to get it through from inside the coffin.   Don't forget about the little washers.  Check out my pictures to get a better idea of how the finished assembly looks.  WHEN YOU ARE FINISHED YOU HAVE TO CRANK IT COUNTER CLOCKWISE. Have fun!!!