These models function as a platform and optional insert for a glass bottle cutter that I got off amazon. I really enjoyed the glass bottle cutter, but it did not have the versatility to cut small diameter bottles. Using the model titled "Platform" you are able to cut a much larger range of bottle diameters! The optional insert is more for cutting strange shaped glass, I will include a picture of an example.

Creality

Ender 3

No

Yes

0.2

15