3D Toddler Mobility Trainer - Free 3D Print Model

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MakeGood

Hobby & DIY>Vehicles

IP Report

Print Profile(10)

All

X1 Carbon

P1S

P1P

A2L

H2D Pro

H2D

H2S

X1E

H2C

P2S

X2D

Complete Chair with all plates. PETG and TPU. REV B and KIT

Designer

373.8 h

29 plates

4.9(91)

Complete Chair with all plates - H SERIES. PETG & TPU REV B

Designer

445 h

21 plates

5.0(11)

SOFT PARTS - FOAMING TPU 0.2mm layer, 2 walls, 8% infill

Designer

26.2 h

2 plates

4.2(5)

BUCKET SEAT - FOAMING TPU

Designer

55.1 h

1 plate

Click to see more

Open in Bambu Studio

Boost

3804

3522

796

1.8 k

2.4 k

796

Released

Description

Welcome to the 3D Printed Toddler Mobility Trainer!

This device is designed for children ages 1-8 to build mobility, independence, and social skills.

YOU MUST READ AND AGREE TO ALL OF THE TERMS AND CONDITIONS AT https://www.3dmobility.org/terms-and-conditions/ BEFORE USING THIS DEVICE!

JOIN OUR MAKER / FAMILY MATCHING PROGRAM AT https://3d-mobility.org/

UPDATE 2026 06 15

Revised ‘REV C’ Front caster mount - easier to install

Changed standard TPU 95A tire setting to: 3 walls and 20% infill. Harder tires gave users a smoother ride

UPDATE 2026 04 25

Revised orientation for the front caster mount.

Replaced 4-part wheel with 2-part wheel. 4-part rim still available at end of build plates.

Added 1-part footrest for both XPA and H series, also shown at the end of build plates.

Added 3D-printed washers to build plates instead of using metal washers.

UPDATE 2026 04 22

Minor Adjustments to the lower push handle to make sure the headrest screw does not hit the handle.

Current file is: 3DTMT XX PUSH HANDLE BOTTOM REV B V3. Both XPA and H profiles updated.

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UPDATE 2026 04 12

REV B RELEASED! This revision encompasses minor but important changes:

New Front Caster Mount

New Push Handle Bottom

New Push Handle Braces

New Headrest

New Headrest Screw

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We are also releasing KIT hardware and filament for all VETTED makers on 3D-Mobility.org. USA ONLY

You can now purchase the $25 KIT (hardware only) or $100 KIT (hardware + filament).

NOTE YOU CANNOT MIX KIT CASTERS WITH SELF-SOURCED (McMaster/Amazon) CASTERS!!!

The updated REV B profiles also reflect these changes related to the KIT:

Additional Plate for the Rear Caster Mount for KIT hardware.

Plate 10 on X/P/A Profile & Plate 8 on H series profile

Additional Plate for TPU 98A tires (TPU 98A will be included in the KIT, print TPU 98A tires at 6% infill)

Plate 27 on the X/P/A profile & Plate 19 on H series profile

Note: All other TPU parts remain unchanged between 98A and 95A

Build sponsoring will be turned on in the coming couple weeks as we get this process underway.

Rear caster available on amazon - https://amzn.to/4xgCRgy - use with this print profile - https://makerworld.com/en/models/2923623-caster-mount-for-amazon-casters#profileId-3271903

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Update 2025 12 04 -

Some users report bed warping on the front part of the ‘Handle’ files. This leads to a gap when fully assembled. I have updated the print profiles to include a 10mm brim for these parts! -Noam

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Printing Info!

This project is designed to be printed on all Bambu Lab printers (except the A1 mini). It takes 10-13 days.

It will work for any printer with a minimum bed size of 256mm^3

It will use around 8 spools of PETG (budget for 10 in case of any failures) and around 3 spools of TPU depending on whether you print the cushions.

We recommend FOAMING TPU for the cushions, see instruction manual for more information.

Please use the pre-sliced files, as they have been optimized for minimal supports and maximum printability. Use a bed adhesive to ensure the large parts do not warp. All STL, STEP and SOLIDWORKS files have also been provided.

DO NOT MODIFY THESE FILES! This design has been through rigorous testing. Modifying the geometry may cause failures, assembly issues, and user injury. DO NOT MODIFY THESE FILES!

.4mm nozzle REQUIRED for TPU straps