I designed a 3D test tube rack for a science teacher (adapted to tubes of 0.5ml, 1.5ml, 10ml, 15ml and 50ml). Since he's got a 3-D printer, he can print as many as he wants for his lab. The file is available in open-source and for free on Thingiverse : https://www.thingiverse.com/thing:4399890
Do other teachers need small equipment to equip their labs? If you don't have access to a 3D printer, I can help you find the closest Hackerspace or Fablab.
I can also help you discover the possibilities offered by 3D printing which becomes a real production tool.
You will be able to learn about 3D printing and make as many parts as you want from the created files.
What do you think about it? Do you need help to equip your science labs?
Do you need parts for your lab ?
Drop a message or call us. We will be happy to help !