This is a model of an American Flag that I designed. It's made for a single nozzle printer. The stripes are held together with a square peg system which, for me, required no glue. However, they are single use pegs, meaning they won't come out without snapping once they're in.
For the most part I didn't have trouble with bowing, but a couple pieces did have adhesion problems on the tip (see the white stripe in the middle.) If you're worried about that I would add some sort of rafting.
I did have to do a little bit of post print operation with the peg holes due to a little bit of overhang on the bottom layers. Nothing serious, but do note that the pegs are quite tight so make sure that all the pegs will fit before fully inserting them. If one goes in and another doesn't fit, the first one will not come out easily and will probably snap if you try.
The models are labeled with the location and color starting from the top. I accidentally printed the same stripe 3 times so I might physically label them when they get printed with a piece of tape.
Printer Brand:
Creality
Printer:
CR-10
Rafts:
Doesn't Matter
Supports:
Yes
Resolution:
0.2mm layer height
Infill:
25%
Notes:
Supports are necessary for the stars part. I printed it with the front face up so that the supports didn't make the front rough and ugly.
Simple explanation
I designed the model in Rhino. Essentially I made a couple curves and lofted them for the front face, copied them for the thickness, and filled the edges with a planar surface. That gives a solid shape of the flag.
I then just equally spaced 12 rectangles and did a boolean split on the original shape to make the stripes. I also used a boolean split to make the stars section. The actual stars were just made with a star shape and a boolean difference. I looked up dimensions/ratios for the flag so everything was to scale.
