Looking to make a finger exo-skeleton

  • Misc.
  • Thread starter DaveC426913
  • Start date
In summary, the turtle wants to bite your fingers off. You can try a manikin hand, metal forceps, or leather welding gloves to feed her. The cage is just for the basking area.
  • #1
DaveC426913
Gold Member
22,989
6,665
TL;DR Summary
I want an exo-skeleton for my fingers so I can finger feed my turtle without getting my fingers bitten off.
I want to protect my fingers (just two is fine) from the crushing bite of my 8" Reeves turtle. She can bite hard enough to hurt and can draw blood.

She wants nothing in life so much as to bite fingers, and will readily eschew real live food in favour of fingers. If she thinks she got a finger (when in fact, she's grabbed the chicken wire of her cage), she will pull so hard, that when she lets go, she shoots herself across the cage bass ackwards.
1690931130007.png
But getting fed is the only highlight of her day, and she saves all her energy up for thundering around her basking area when anything remotely likely to have a finger attached to it comes into the room.

I guess the obvious thing is a pair of thimbles but they are rigid and provide zero tactile feedback. They also make it hard to grip food, especially squirmy food.

I tried tweezers but they are very awkward. I keep dropping the food, because, again, rigid and no tactile feedback.

I thought of a chain mail butcher's glove but it won't protect me from crushing damage.

I wonder if a section of garden hose would work? Other suggestions?
 
Physics news on Phys.org
  • #2
DaveC426913 said:
TL;DR Summary: I want an exo-skeleton for my fingers so I can finger feed my turtle without getting my fingers bitten off.

I thought of a chain mail butcher's glove but it won't protect me from crushing damage.
They look inexpensive enough to give them a try...

1690933647725.png
 
  • #3
Or maybe try this Google search to find an articulated manikin hand that you can use to feed turtlezilla...

1690933896581.png
 
  • #4
DaveC426913 said:
TL;DR Summary: I want an exo-skeleton for my fingers so I can finger feed my turtle without getting my fingers bitten off.

I tried tweezers but they are very awkward. I keep dropping the food, because, again, rigid and no tactile feedback.
Try a locking hemostat, or long nosed pliers. You can slide a silicone or vinyl tube over the metal, and glue it in place to stop the tube being eaten.
https://www.ebay.com.au/itm/194614615885
 
  • Like
Likes DaveC426913 and berkeman
  • #5
berkeman said:
They look inexpensive enough to give them a try...

View attachment 329970
I thought of this, but it won't protect me against crushing damage. And the fact that it's tiny bits of metal may result in poor Winnie injuring herself.
 
  • #6
DaveC426913 said:
I thought of this, but it won't protect me against crushing damage. And the fact that it's tiny bits of metal may result in poor Winnie injuring herself.
Okay, it's a manekin hand then. Metal forceps probably won't be as satisfying for Winnie as being able to dent those manekin fingers with each meal... :smile:
 
  • #7
There are tweezers that will grip what they hold as a default and release when squeezed:
Pretty cheap.
Screenshot 2023-08-01 at 7.08.42 PM.png
 
Last edited:
  • #8
Something based on sewing thimbles?

942a-7d00d96a4ea0.f81e6e85c248ac9cd6eb59545439fa5a.jpg


Looks DIY-able, can be extended inward for stronger grip and outward for keeping more distance...
Also gives some tact feedback...
 
  • Like
Likes DaveC426913
  • #9
Well... if you insist on hand feeding instead of just dropping food in the cage, try leather welding gloves. They tend to be stiff and thick enough to spread the crushing force over a fair area. If insufficient, add winter-weather skiing gloves for an inner layer.

p.s. That looks like an awfully small cage for the turtle, less than 3 times its size? And I'll bet the natural habitat is not a plank floor.

Cheers,
Tom
 
  • #10
Tom.G said:
p.s. That looks like an awfully small cage for the turtle, less than 3 times its size? And I'll bet the natural habitat is not a plank floor.
That's just the basking area up top. There's a ramp leading up into it from a 70 gallon tank.
 
  • Like
Likes berkeman, Tom.G and BillTre
  • #11
I have handled snapping turtles large enough to severe half my foot in a single chomp - if given a chance. They can be lifted from the sides if you are careful to keep your hands out of reach of their claws.

I wouldn't put my fingers anywhere near the head or neck - with or without chainmail.
I recommend a complete strategic change in your feeding method.
 
  • Like
Likes BillTre

FAQ: Looking to make a finger exo-skeleton

What materials are best for constructing a finger exo-skeleton?

Materials commonly used for constructing a finger exo-skeleton include lightweight metals like aluminum or titanium, high-strength plastics such as ABS or polycarbonate, and flexible materials like silicone or thermoplastic elastomers. The choice of material often depends on the specific requirements for strength, flexibility, and weight.

How do you ensure the exo-skeleton fits properly on different finger sizes?

Ensuring a proper fit can be achieved by using adjustable components, such as straps or modular segments. Custom 3D printing based on precise measurements of the user's fingers can also provide a tailored fit. Additionally, incorporating flexible materials can help accommodate slight variations in finger size and shape.

What power sources can be used for a finger exo-skeleton?

Common power sources for finger exo-skeletons include small batteries like lithium-ion or lithium-polymer cells. Some designs may also use energy harvesting techniques, such as piezoelectric materials that generate power from finger movements, or pneumatic systems that use compressed air.

How can the movement of the exo-skeleton be controlled?

Movement can be controlled using various methods, such as servo motors, pneumatic actuators, or shape memory alloys. Control systems often include sensors like flex sensors or force sensors to detect finger movements and provide feedback. Microcontrollers or custom electronics can be used to process sensor data and control actuators accordingly.

What are the main applications of a finger exo-skeleton?

Finger exo-skeletons have a wide range of applications, including rehabilitation for patients recovering from hand injuries or surgeries, enhancing grip strength for individuals with disabilities, and augmenting human capabilities for tasks that require precision and strength. They are also used in virtual reality and teleoperation systems to provide haptic feedback and improve user experience.

Back
Top