diff --git a/sql/consolidate_pc_machinetypes.sql b/sql/consolidate_pc_machinetypes.sql
new file mode 100644
index 0000000..ef838f4
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+++ b/sql/consolidate_pc_machinetypes.sql
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+-- Consolidate PC Machine Types
+-- Date: 2025-12-08
+--
+-- Previously PCs used multiple machinetypeids:
+--   33: Standard PC
+--   34: Engineering PC
+--   35: Shopfloor PC
+--   42: PC - Wax Trace
+--   43: PC - Measuring Tool
+--
+-- Now all PCs use machinetypeid 33 (PC) with pctypeid for sub-type
+
+-- Add new PC types
+INSERT IGNORE INTO pctype (typename, description, functionalaccountid, isactive, displayorder) VALUES
+('Keyence', 'Keyence measurement system', 1, 1, 6),
+('Genspect', 'Genspect inspection system', 1, 1, 7),
+('Heat Treat', 'Heat treat monitoring', 1, 1, 8);
+
+-- Rename machinetypeid 33 to just 'PC'
+UPDATE machinetypes SET machinetype = 'PC' WHERE machinetypeid = 33;
+
+-- Update pctypeid based on current machinetypeid
+-- 34 (Engineering PC) -> pctypeid 2 (Engineer)
+UPDATE machines SET pctypeid = 2 WHERE machinetypeid = 34 AND (pctypeid IS NULL OR pctypeid = 1);
+
+-- 35 (Shopfloor PC) -> pctypeid 3 (Shopfloor)
+UPDATE machines SET pctypeid = 3 WHERE machinetypeid = 35 AND (pctypeid IS NULL OR pctypeid = 1);
+
+-- 42 (PC - Wax Trace) -> pctypeid 6 (Wax / Trace)
+UPDATE machines SET pctypeid = 6 WHERE machinetypeid = 42 AND (pctypeid IS NULL OR pctypeid = 1);
+
+-- 43 (PC - Measuring Tool) -> pctypeid 7 (Keyence)
+UPDATE machines SET pctypeid = 7 WHERE machinetypeid = 43 AND (pctypeid IS NULL OR pctypeid = 1);
+
+-- Consolidate all PCs to machinetypeid 33
+UPDATE machines SET machinetypeid = 33 WHERE machinetypeid IN (34, 35, 42, 43);
+
+-- Verification query
+-- SELECT pt.pctypeid, pt.typename, COUNT(*) as count
+-- FROM machines m
+-- JOIN pctype pt ON m.pctypeid = pt.pctypeid
+-- WHERE m.pctypeid IS NOT NULL
+-- GROUP BY pt.pctypeid, pt.typename
+-- ORDER BY pt.pctypeid;