Square Tube Mounting Points

My Rose Blend Road does not come with top tube and fork attachment points. Moreover, the tubes are square and tapered. I recommend using a piece of inner tube between the frame and the model. The threads are M5 inserts. The part that goes around the frame is printed in 95 TPU, and the piece with attachment points is in PETG. For extra tackiness, apply some contact cement to the surface that wraps around the tubes. The best way to marry the TPU and PETG piece is to push down 1 lip of the PETG piece and slide it as far under the opening as you can. Then, use 2 levers to slide it over the other side. The PETG should be flexible enough to accommodate without breaking. The PETG piece is printed with 100% infill. The TPU piece is printed 100% at the top and 20% infill, where it wraps around the frame. I added fuzzy skin to the areas wrapping around the frame, but I don't think it's necessary when using the inner tube. 

I use velcro straps to secure the pieces.