Answered: Definition of "Plastic"

[Eric_J]

An unlimited number of plastic 3D printed parts, each less than 3” x 6” x 6”

First off, thank you for adding this rule. It is going to be supper cool to build robots with unlimited printed parts in VexU.

With the definition of plastic, I take this to mean that you can use the standard ABS and PLA plastics, but not do metal printing.
Would something such as ninja flex (http://www.ninjaflex3d.com/products/ninjaflex-filaments/) be considered a plastic and be legal?

Here ([http://www.ninjaflex3d.com/support/using-ninjaflex/technical-specifications/) it states under chemical name that it is a chemical called “Thermoplastic polyurethane.”

Because it is a thermoplastic, I assume that this would be legal for competition?](http://www.ninjaflex3d.com/support/using-ninjaflex/technical-specifications/) it states under chemical name that it is a chemical called “Thermoplastic polyurethane.” )

[Karthik]

@Eric_J

First off, thank you for adding this rule. It is going to be supper cool to build robots with unlimited printed parts in VexU.

You’re welcome. We’re excited to see how teams use this rule to enhance and improve their VEX U robots.

@Eric_J

With the definition of plastic, I take this to mean that you can use the standard ABS and PLA plastics, but not do metal printing.

Yes, this is correct.

@Eric_J

Would something such as ninja flex (NinjaTek Advanced 3D Printing Filaments - NinjaTek

) be considered a plastic and be legal?

Here ([NinjaTek Advanced 3D Printing Filaments - NinjaTek) it states under chemical name that it is a chemical called “Thermoplastic polyurethane.”

Because it is a thermoplastic, I assume that this would be legal for competition?](NinjaTek Advanced 3D Printing Filaments - NinjaTek) it states under chemical name that it is a chemical called “Thermoplastic polyurethane.” )

Yes, this is a plastic and would be legal for use in VEX U.

[Eric_J]

Thank you for the fast response.

[Karthik]

@Eric_J

Thank you for the fast response.

You’re welcome!

[Eric_J]

Follow up question:

Would composite materials such as these (https://store.makerbot.com/filament/composite) count was plastics as they are PLA plastics infused with other materials?

[Eric_J]

2nd follow up question:

If something was printed out of flexible plastic (question 1) what would the size requirements be for the part?
Would it have to be within size at all times, be compressible to the size requirements, or have a starting size inside but expand outside?

[Eric_J]

Bump. I am not sure if you saw the follow up questions.

[Karthik]

@Eric_J

Would composite materials such as these (https://store.makerbot.com/filament/composite) count was plastics as they are PLA plastics infused with other materials?

No, these would not count as plastics.

[Karthik]

@Eric_J

2nd follow up question:

If something was printed out of flexible plastic (question 1) what would the size requirements be for the part?
Would it have to be within size at all times, be compressible to the size requirements, or have a starting size inside but expand outside?

It would need to be within size limits at all times.