I had some left over Kevlar, but it was way too thick and strong for a rocket this size.
Out of the three strand Kevlar, I unraveled and used a single strand.
This is another budget build, I used a expended engine casing for an engine block. 1/4" was cut off using a razor saw and a mitre box.
The notch for the Kevlar was made with a diamond file.
Before putting any glue into the body tube, you should mark and have everything ready.
I wanted the engine to stick out of the back of the BT-5 body tube by 1/4".
Setting a used engine next to the body let me see where the engine block would end up in the tube.
I set a rounded dowel next to the tube and marked the dowel where it intersected the end of the body tube.
This dowel will be used to apply a line of glue into the body tube where the engine block will sit.
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