Hydraulic Claw

Ages 9-16+

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Build with hydraulics! Hydraulics are used all over, from airplanes to factories to theme parks. Explore engineering and learn how to build your own hydraulic lifting claw and continue experimenting with bonus design challenges.

Includes illustrated blueprint instructions, materials, and a special-edition Tinker Zine magazine to learn more about amazing hydraulic machines.


  • Build a hydraulic assembly
  • Construct a hydraulic claw
  • DIY plastic cup squirter
  • DIY hydraulic-powered puppet
  • DIY hydraulic elevator
  • Hydraulics Design Challenge


  • Hydraulic Systems
  • Gases and Liquids
  • Robotics

Using charter school funds?

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9 reviews

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    Cathy, Aug 13, 2020

    Good idea

    My son and his friend built this with ease and it was fun. It just wasn't able to stay standing up very well. Still great though.

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    Kyle, Jul 13, 2020

    Very fun project, parts are a little flimsy.

    We loved building this one - and like usual we integrated the concepts and actual parts into several other designs over time. However, the cardboard parts would have been so much better as laser cut wood like we got with the trebuchet.

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    Cassandra, Apr 19, 2020

    My sons favorite crate by far

    He still uses it weeks later. He is 7 yrs old and needed some assistance but is very well explained and not to hard to assemble

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    Jay, Mar 1, 2020


    A little difficult

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    amanda, Dec 22, 2019

    Lot's of fun! Lot's of build options!

    My 5-year-old son begged for this kit and for the most part, it didn't disappoint! My only criticism would be that the parts and pieces are a bit flimsy. It's tough to make the claw not bend and bow due to the weight of the syringes necessary to operate the hydraulics. A bit sturdier clasps and claw pieces and this would be a 5 star for sure!

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    Yelena, Dec 22, 2019

    Amazing for my 6 year old!

    I got this crate for my 6 year old and he absolutely loved it. I only had to help him a little bit. I think the learning experience is great with this project and the end result is so cool.

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    Candi, Nov 29, 2019

    Loved it!

    My son loved this he’s changed it around , built it himself he’s 13.

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    Christina, Nov 16, 2019

    Amazing for my 11 yr old so

    My son loved this project and I posted his completed product on FB. So many comments about how cool it was and teachers loved it!

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    am, Aug 28, 2019

    Falls over, not sturdy

    The concept of this is very cool but the materials don’t hold up. They cheap out and have you build this with card board pieces that can’t hold the weight of the syringes full of water. The thing is fallen over and doesn’t work well.

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