Again forgot the picture

Also sorry for the very late respons. Since last year I own a Prusa MK3 and also use Prusa slicer. With this program there are no problems at all. Every stone I print comes out great.
Greetings from Arie
@Ariemat_67456 thanks for your info (and sorry for my delayed reply...). Glad it works in PrusaSlicer. Cool colors by the way :-)
Hello Ariemat, sorry for my late response, somehow the new coment notifications didn't make it to me... found your comments just by accident. It is weird you are experiencing problems as Prusaslicer I am using makes prefect gcodes which work just fine. Please try to optimize one of the stls. In the meantime, I will try to re-export stls from the Prusaslicer and upload them here to see if they make any difference. Sorry for the inconvenience. (edited)
When I printed one tile on my Creality (scaled to 20%) the result was a flat surface (no holes).
You know you now have to create a case to store it all in. With a cover, of course. 😀
Ha :-) I found a metal box which accomodates my set perfectly. I might make a printed box, thought about it aalready.I will put it onto my to do list.