I am making a hook for my robot for the High Stakes hook mechanism. It will pick up the ring like in this video: https://www.youtube.com/watch?v=ybP6bGynbs4
Will I be able to 3D print a hook that attaches to the standoff?
I do have plexiglas, but would like to know if 3D printing hooks would be allowed/referee wouldn’t care.
Thanks!
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Have you checked the game manual? Read <R19>.
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No, you cannot 3d print but something I would recommend that my team is going to do is the shape we modeled on CAD that we want we are going to print and then cut the poly carb using that as a template.
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No. 3d printed parts are not allowed in VRC as they are not sold by vex or made out of legal polycarbonate.
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Ok, but this plexiglass would work, correct?
No. Acrylic is listed on the prohibited materials in R19.
I would look for “polycarbonate” instead.
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Plexiglass, is not permitted as it is shattering. If your chosen plastics meets the robot rules criteria regarding plastic you should be ok.
Here is the list of acceptable materials for “plastics” from the Game Manual:
Legal plastic types include polycarbonate (Lexan), acetal monopolymer (Delrin), acetal copoly-
mer (Acetron GP), POM (acetal), ABS, PEEK, PET, HDPE, LDPE, Nylon (all grades), Polypropylene,
and FEP.
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No, but polycarbonate like this from RoboSource is perfectly legal and high-quality.
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But is the difference noticable to referees?
Even if it were not, why would you want to commit a code of conduct violation by deliberately cheating? Additionally, this rule is in place for safety because plexiglass is a shattering plastic and could cause injury.
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On top of what @kmmohn has mentioned about shatter-prone materials being a danger to everyone involved if they shatter, refs will likely realize your team used materials which are banned from the competition because they will shatter or get damaged from lighter collisions than the legal materials. If your plexiglass ends up shattering, the low strength of the collision (by comparison to one required to do the same damage to the legal materials) will give your cheating away. That’s a lot of risk for little to no benefit. Shattering means you have to replace it often, negating any significant price advantage.
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Its not a price thing for our team, we are not a school team, but our competition is on saturday and our robot is still not yet built.
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