Not long ago I bought a new flash Nikon SB-600 and a pack of color gels. I surfed the net for a solution how to mount gels on a flash, found some ways but my gels was too big for DIY mounting racks I found, so then I saw an article “DIY 580ex color gels printing diagram“, it inspired me to make a printing diagram for my flash. I spend some time measuring my flash head and draw a sketch in Illustrator. Then I printed it and tried to mount on my flash, it fits perfectly.There are two ways to mount the gel:
Above the diffuser (bend the gel at “over diffuser” mark)
Under the diffuser [more]