Three pieces available are the inside cornering tool, float, and scraper
I just wanted to make some hand tools that are easy to print and use that do... not require any sort of outside parts.
3d model print parameters
I used PLA and a 0.15mm layer height works well but 0.20mm also can be used for quicker prints. The float and the handle to the cornering tool will ne...ed support, otherwise they can be printed as is.