ZIP comment
archive comment cleared
An identifier field embedded in the ZIP archive structure. This field is not part of the standard 3MF specification and is cleared during normalisation.
_rels/.rels
non-standard relationship removed
A non-standard relationship entry found in the package index. This entry references a path outside the standard 3MF specification and is removed during normalisation.
3dmodel.model
embedded identifiers normalised
Non-standard identifier fields embedded in the model metadata. These fields are outside the core 3MF specification and are cleared during normalisation.
Creation and modification dates
timestamp fields cleared
Timestamp fields embedded in the model metadata. Clearing these fields produces a consistent, normalised output independent of when the file was created or modified.
slice_info.config
client header fields removed
Header fields in the slicer configuration file that record software client information. These fields are removed to produce a clean, normalised output.
project_settings.config
embedded date references cleared
Date references embedded within the print settings configuration. These are cleared to standardise the file contents.
model_settings.config
internal path references cleared
Internal file path references embedded in the object settings. These references are cleared to produce a self-contained, normalised file.
Vertex coordinates
coordinates standardised to 4dp
Vertex coordinates are standardised to four decimal places, which exceeds the precision of any consumer 3D printer. This ensures consistent, normalised geometry output.
Application metadata
software version field cleared
An application identifier field in the model metadata recording the originating software version. This field is cleared to produce a normalised output.
PNG thumbnails
thumbnails re-encoded via canvas
Thumbnail images are re-encoded through a canvas pipeline to ensure clean, standardised output. The visual content of the thumbnails is preserved.