I haven't been able to find a QL shaped Enter Key top. I though I might just have the Vertical 2U Enter Key, put the " \ | " key next to the Enter key and maybe a 1U "Delete" in the top corner - I just trying to source a double-pole cherry key switch so I can take Ctrl and left arrow to it, or perhaps a horizontal 2U Enter key with a "Delete" above that. I don't thing a 3D printed one would look very professional. I'll give it a go on my new Anycubic Kobra S1 printer and see how it come out - I don't think anyone has come up with any double shot QL keys so I would have to write "Enter" on the top in crayon. The idea is you can just take the real QL keytops of the original keyboard and put them on the new mechanical keyboard. It does involve rather a careful operation to cut out the old keyboard from the QL upper case - so it's not for the faint hearted. I just didn't have a keyboard so I bought a set of MX keytops from Aliexpress for about £7.