This tool storage system utilizes the vacant sides of the printer. As shown, i have my jewelers tool set on the system. I have used a dovetail railing system at the top to join the pieces together. I used a little hot glue to secure them to the top. The upper pieces have the male dovetails that lock into the female dovetail rails along the top. The lower pieces connect with the pole sliding through the bottom of the upper pieces. You can glue these together if you would like, but they are pretty secure. Right now, i do not have mine glued to the sides of the printer. However, i would recommend placing a small amount of glue behind each pole to secure it to the printer. Double sided tape should work too. Please let me know what you think. I am always looking for good feedback. thanks and enjoy!