Step 4: Printing and glueing model together
The final step was to glue the parts together, sand, and prep for painting.
Since my printer uses ABS plastic (not PLA), I glued the parts by melting small pieces of ABS in a cup using acetone. This makes a very fine and sticky paste that is brushed on using small brushes. As the acetone evaporates and dries out... the paste becomes solid and fuses both pieces together. This process gives excellent results that leaves a seamless effect. Everything else like crazy glue, two part glue, plastic glue, etc are all horrible and leave very bad seams and discoloration.