12th F4 CADathon

Hello everyone,

The F4 CADathon GDC is pleased to announce that we will be hosting our 12th CADathon from 6pm Eastern on Friday, December 16th - 11pm Friday, December 23rd.

For those unaware, a CADathon is like a hackathon but with CAD. People/teams are given a short period of time to CAD a specific thing (in this case a robot) ending with a panel of judges selecting a winner. If you would like to see information about prior events, here are the threads from our second, third, fourth, fifth, sixth, seventh, eighth, 8.5th, ninth, tenth, and eleventh CADathons.

Team information:

  1. The CADathon duration is 1 week.

  2. There will be no limit to CADathon team size if and only if everyone on the CADathon team is a member of the same FIRST (FRC etc.) team.

  3. For CADathon teams with members of different FIRST teams, teams may be composed of up to three participants, with limited exceptions as specified below.

  4. If you are competing solo, but would like to be assigned up to 2 random partners, you can sign up as a “random” in the signup form and we will do our best to match you with a partner using the same software and in a similar time zone.

Teams composed of more than three unaffiliated students are allowed at the discretion of the organizers, with the primary intent of making learning opportunities for new designers more accessible. These will be handled on a case by case basis, and you must contact us before participating in this manner.

We do not have any requirements of participants other than the basic requirements of being willing to participate and having access to CAD software of their choice. Any age, student or not, whether you’ve never done any sort of CAD before or have been designing robots for a decade, are invited to put their skills to the test. If that sounds like you, please sign up below

Submission requirements:

  • For non-Onshape software

    • CAD files in a neutral format (STEP, Parasolid)

    • Native CAD files if using non-Onshape software

    • Submitted via GrabCAD Workbench or Community

  • For Onshape

    • A link to an Onshape document with downloads turned on
  • Any renders of the robot

  • A “pit scouting” document used to explain the design to the judges

  • All files unless otherwise mentioned must be received prior to 11PM on Friday, December 23rd

  • Renders may be submitted or added to the submission until 8PM, Monday the 26th

All files will be checked by the CADathon staff in order to ensure compliance with the rules. Failure to comply with the rules may result in penalties up to and including points or disqualification.

The Judging Process

The following process is used in order to judge the teams: The submissions will be split amount our judges evenly. The judges will score their assigned submissions, and the top teams from their pool will be judged by the other judges. All teams will receive feedback from at least one judge, unless they indicate a preference not to receive feedback.

We are actively looking for judges. If you are interested in being a judge, please complete the judge form here:


Please be sure to join the discord to be up to date with answers to Q&A questions and interacting with other members of the CADathon.

Link to join: http://discord.gg/BExfkH2

Sign up form:

The soft deadline for signups is December 15th at noon. We do allow late signups during the event, but please sign up as soon as you decide to participate.

Regardless of what type of team you are (solo, 3 person, FIRST team, etc), ONLY 1 MEMBER OF EACH TEAM SHOULD COMPLETE THE SIGNUP FORM.

If you are competing as a FIRST team, and a member of your team has previously competed in CADathon, the team may use that member’s CADathon team number if they wish, by selecting the “existing team” option:

Information about prizes and the awards show will follow.


We are proud to officially announce the 12th F4 CADathon is sponsored by WCP & REV!!!
They will be providing prizes for the top 3 teams, along with prizes for specific awards.

Additionally WCP will be sponsoring even more giveaways with WCP Swag Boxes. Some of the giveaways will be restricted to participants (you must be on the F4 CADathon Discord), and even more giveaways will be available for stream watchers!

To maximize your chance of winning a WCP Swag Box, you must be a participating member of a team (and on the F4 CADathon Discord) and also watching the results stream live on FUN!

The WCP Swag Boxes each consist of:

  • 3 x 10 pack wire nuts
  • 2 x Straight Flex Wheels
  • WCP Stickers
  • WCP Pop Socket
  • WCP Bottle opener
  • And an assortment of WCP gears/sprockets

The full Prize/Giveaway list is as follows:
For the top 3 teams:

  • 1st Place: $50 WCP Giftcard & $50 REV Giftcard
  • 2nd Place: $25 WCP Giftcard & $25 REV Giftcard
  • 3rd Place: $25 WCP Giftcard

Additional awards:

  • 1 Award for best/innovative use of REV products: $50 REV Giftcard
  • 3 Awards for best/innovative use of WCP products: WCP Swag Box
  • 10 Giveaways of WCP Swag Boxes for active participants in the discord, and also watchers of the stream

Hello everyone!

The CADathon GDC is proud to present Panic! It’s a Disc

You can find the game manual here: CADathon 12 Game Manual - Google Docs
See all of the event documents in this folder: CADathon 12 Release - Google Drive
View and download the field CAD (Onshape): Onshape

For any formal rule clarifications, etc. Please ask them via the Q&A form (the form will be closed for the first 30 minutes, READ THE MANUAL): https://forms.gle/1rKbqPkBm2fqDmrZ6
And you can view pending and answered questions here: Public CADathon 12 Q&A - Google Sheets

A reminder that CAD files, and pit scouting sheets are due at 11pm EST on Friday, December 23rd, renders can be submitted until 8pm EST on December 25th. Good Luck Teams!


Come check out the F4 CADathon awards and judging show! Starting at 8:00pm eastern at FUN’s Twitch channel. There’s awesome WCP Swag Boxes for viewers and also the Gift Cards from REV and WCP for the top 3 teams and innovative uses of products!

Come watch to check out all the submissions that will be presented!

Here’s one of our awesome submissions for Panic! It’s a Disc


Will there be a 2023 Cadathon? I have a group of students who are chomping at the bit!

1 Like

We will announce something when we have firmer plans, but the intent is to run a CADathon in a similar timeframe as last year.


My team wants to know if you guys are hosting a CADathon again?


Quite late but I believe @cadandcookies can confirm there is no F4 CADathon this December? (At least this is what the F4 Discord indicates… and I didn’t see anything else on CD.)


Yes. Apologies to anyone who was looking forward to an event. Unfortunately circumstances conspired to make hosting one impossible this year. We hope to host another CADathon again at some point.