coupler

What is the best location for the couplers? This is where the parachutes will come out of. The ejection charges will be set off in the orange ejection charge wells, separating the gray body tubes and pulling out the parachutes. Will attaching the green couplers to the upper or lower body tube...

Hi fellow rocketeers, I hope you're doing great out there. I'm having trouble finding different sizes of cardboard tubes to use them as BT but I have found some. The problem comes when, because of the limited variety of diameters, I can't buy cardboard tubes that fit neatly into the BT and serve...