Print on the side for the arc light rail bars and print up right for the 2 end stands. use full support on the arc beams. not necessary and it is hard to clean if you do full support on the end stands. to clean the inside of the rails of Support material I used a dental tool to easily scrap it out.
dental tool to clean out support material wasn't to bad to dig out
I strung out the lights through the rails first before gluing together. I used rubber bands on the ends to help hold the light as the glue cured.