← RETURN TO INDEX
OPEN FULL SIZE ↗Conceptual tap-test block plan; not a calibrated gauge or downloadable model.Explanatory drawing based on this record
RECORD LOCATED / 2026.09.01
FreeCAD parametric tap-test blocks
A tap-test block can compare printed hole sizes or thread behavior, but it is not a calibrated thread gauge.
CAD-012REV A
AI narration using Robert's voice. FreeCAD parametric tap-test blocks / short introduction.
A CLOSER LOOK
Every hole needs its own test identity
OPEN FULL SIZE ↗- Parameters
- Diameter, depth, spacing and labels
- Separate
- Pilot-hole and printed-thread trials
- Record
- Nominal, offset and result
CLASSIFICATIONCAD
STATUSRecovered/Partial
MATERIALCAD / AUTOMATION
DISPOSITIONPUBLIC / RECOVERED/PARTIAL
TECHNICAL NOTES///
A tap-test block can compare printed hole sizes or thread behavior, but it is not a calibrated thread gauge.
PUBLIC KNOWLEDGE VIEWCAD / Scanning / Automation / how-to
GOALRun the first test described in this guide and record the result for freecad parametric tap-test blocks.
EQUIPMENT
- FreeCAD
- Representative test model
- Measurement or inspection method
STEPS
- Define block size, spacing, edge distance, hole diameter, depth and label values in a parameter table.
- Create a constrained base sketch and pad it. Place hole centers from the same parameter table.
- Choose plain pilot holes for actual tapping tests, or explicitly modeled threads for a printed thread trial; do not mix their labels.
- Recompute, label each hole and export only the final body. Print a small set of diameter offsets and compare using the intended tool.
TROUBLESHOOTING
- Cosmetic threads may not export to STL. Small printed threads differ from machined threads, and printer shrinkage invalidates a nominal gauge claim.
THINGS TO WATCH FOR
Cosmetic threads may not export to STL. Small printed threads differ from machined threads, and printer shrinkage invalidates a nominal gauge claim.
RESULTEach physical hole maps to a recorded nominal size, offset and test result.
DEVELOPMENT HISTORY///
2026.09.01Rev A
Imported as an independent manifest record; public copy keeps uncertainty visible.
SPECIFICATION///
Tool pathFreeCAD
DeliverableHOW-TO
ValidationRepresentative model / known dimension
StatusRecovered/Partial
RELEASED MATERIAL///
WHERE THIS STANDS
Each physical hole maps to a recorded nominal size, offset and test result.
The record keeps what is known at this revision. Unfinished tests stay unfinished here.