Grandpa's Choice 3D Modeling Challenge

Show off your creativity and win free model generations! Design a 3D printable parametric model using GrandpaCAD. Our judge, the original Grandpa, is looking for unique designs – from art pieces to practical solutions. It will make his week to see people create stuff for him!

Judge:

OG Grandpa

81 years old, loves to gift his 3d prints

Rewards

How to Enter

Simply Publish your model and tick 'Enter competition'.

Notes:

Submission Deadline
November 30, 2025
Participants
Unlimited entrants