Model Building

Rules & Regulations

• The model must be created with plastic model;

• The model must be made by the contestant;

• The model must be in dimensions no larger than 50cm x 50cm x 50cm (19.68in x 19.68in x 19.68in);

• Contestant must be 15 years or older;

• Contestant must acknowledge the rules and regulations of the contest;

• Models must abide by the OS4CA Dress Code;

• Models may not be set in suggestive or inappropriate poses; 

 

Contestant work, description and other details which are against any rules and regulations from this contest and convention will be forfeited from the contest without any prior notice.

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Submitting Entries 

Entries can be submitted online prior to the event, or on site. On site submissions will open Friday at 2pm during the event. Please refer to our maps once released for location information. Entries will no longer be accepted past 6:00pm on Saturday.

 Contestants will have ten minutes to do final positioning after the model is checked in at the contest.

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Eligibility

Anyone may enter in the Model Building Contest, excluding OS4CA staff.

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By entering an OS4CA Organized Contest, Competition, or Showcase: 

All participants agree to uphold and demonstrate fair play, respect, and sportsmanship to the highest standards.Any form of unsportsmanlike conduct, including but not limited to disparaging remarks, offensive language, or any actions that may be deemed harmful or detrimental to other participants, attendees, the Event, or OS4CA and its staff will not be tolerated. Such behavior will result in the immediate removal of the offending entry from the current contest and may lead to a suspension of eligibility to participate in future OS4CA Event contest events. OS4CA is committed to fostering a positive, respectful, and inclusive environment for all, and participants are expected to contribute to maintaining this atmosphere.​

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Judging Criteria

Judging will take place by 7pm on Saturday. Entries will be judged on craftsmanship, painting and idea (concept).

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​SPECIAL JUDGING OPTION FOR 2025!

Models that specifically incorporate the 2025 theme can be included for an additional special judging option for each category.

 

Winner Announcement & Prizes

Announcement of Winners:

Winners will be posted at the Model display area by 12pm, Sunday. They will also be announced during final ceremonies. 

If a category only receives one entry, the winner will receive prize support selected by the judges.

  

Prize packs can be picked up from 12pm – 4pm, Sunday, at the Model display area.

 

Post Contest

Picking Up Your Model:

All entries may be picked up Sunday, from 12pm – 4pm unless other arrangements have been made prior to that time. Any artwork that is not picked up becomes the property of OS4CA.

All Entries will be handled with care, OS4CA cannot be held responsible for any damages.

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***Rules are subject to change at any point prior to Tokyo, OK 2025.**