A lot of people print their parts directly on the build platform surface and compensate for the squishing via CAD or Meshmixer. I.e. they add ~ 0.5 mm thickness or similar to that surface, which will touch the build platform surface (e.g. compare Print directly on build tray).
Tbh the real workaround would be so easy to do in Preform that it strikes me nearly as being stupid to not include:
- Add a parameter “z-axis offset compensation” as an positive numeric value of mm. E.g. 0.5 mm.
- Reprint the very first layer on floor(z-axis offset compensation / layer height) layers and after that print the actual part
- Done, thats all to add