DNA Double Helix
This DNA Double Helix model is meant to be simple to print, simple to assemble and sturdy. This print utilizes 1/2" diameter straws to assemble the base pairs.
Base pairs should also snap together. This is accomplished NOT by pressing them together as you would a puzzle piece but rather angling the connection, as you press them together, then slowly move them into a straight line.
I put a video up on YouTube going over how to assemble it and the time and cost it takes to print https://youtu.be/D05Kgjrwpb4