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SW_MCP (SolidWorks MCP bridge)MCADConfidence: Medium

On SolidWorks 2016, the set_dimension tool reports success for a sketch dimension change the sketch cannot solve. The dimension stores the new value while the solver rejects it, the geometry does not move, the sketch is left no_solution, and check_errors reports nothing. Measured probes showed the mass and every segment unchanged against the ok:true answer.

Impact Analysis

Persona
Mechanical Designer
Team Size Impact
5x Multiplier
Prototype Delay
2 Days
Est. Annual Cost
$12,000
  • 1 user · 1 month180 min
  • Rest of team720 min
  • Rest of year9,900 min

monthly_minutes × 12 × team_multiplier ÷ 60 × $75/hr = $12k/yr

$75/hr assumed rate.

Annual team-minutes decomposed from the reported monthly inputs.

Evidence & Sources

1 Sources
SW_MCP issue #14: set_dimension reports ok while the sketch is left no_solution and nothing moves
github.com
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Analyst Notes

From the Grok ProductFlo pain-radar compilation, finding 47, found 2026-10-10, score 5/5. Verbatim evidence: "Every tool answer says success, and only a volume or segment readback shows that nothing happened." Cost model assumes the no-op dimensioning is caught by a mass-properties readback and the sketch redefined by hand.