January 29, 2026
Description
This is can be used as several things, with the TPU seat you can haul the kids around, without the seat it is a decent shallow storage tray, the cup holder can be used with or without the tray. There is an arm that captures the seat post it is meant to fit snug and expand around the weld of the seat post.
I recommend a softer TPU for the seat, mine was first printed in 95 TPU and its a bit stiff. The honeycomb in the seat is from the infill being exposed not the model itself, you can customize your seat by changing the infill pattern.
Parts are connected with m4 threaded inserts and m4 screws, step files available if you would like to modify these attachments.
parts list:
4x m4x8 screws
4x m4 shallow threaded inserts
TPU
PETG
PLA
License:
BY-NC-SA