lab rat test tube holder

Now the lab rat is a lab assistant and can help by holding a test tube in it's hands. 

Available to hold 2 different size test tubes.  There's an opening to read the test tube contents.

Print with .6mm nozzle, use Arachne, no supports needed.

Give to your favorite researcher or PhD student 

I changed the model to be able to vertically hold an empty test tube (2 different sizes) and removed the base.  I had to move the hands to be on the outside of the holder and added an opening to read the values on the test tube.