v3.26.3
Schedule of revenue recognition - sales revenue by product line (Details) - USD ($)
3 Months Ended 6 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
Disaggregation of Revenue [Line Items]        
Sales revenue $ 5,232,153 $ 5,162,696 $ 10,893,312 $ 10,295,469
Fluxing Systems [Member]        
Disaggregation of Revenue [Line Items]        
Sales revenue $ 27,000 $ 165,000 $ 119,000 $ 317,000
Sales revenue, percent 1.00% 3.00% 1.00% 3.00%
In-Line Coating Systems [Member]        
Disaggregation of Revenue [Line Items]        
Sales revenue $ 1,778,000 $ 1,530,000 $ 3,937,000 $ 4,584,000
Sales revenue, percent 34.00% 30.00% 36.00% 45.00%
Multi-Axis Coating Systems [Member]        
Disaggregation of Revenue [Line Items]        
Sales revenue $ 1,975,000 $ 2,030,000 $ 4,050,000 $ 2,707,000
Sales revenue, percent 38.00% 39.00% 37.00% 26.00%
OEM Systems [Member]        
Disaggregation of Revenue [Line Items]        
Sales revenue $ 642,000 $ 394,000 $ 873,000 $ 524,000
Sales revenue, percent 12.00% 8.00% 8.00% 5.00%
Spare Parts, Services and Other [Member]        
Disaggregation of Revenue [Line Items]        
Sales revenue $ 810,000 $ 1,044,000 $ 1,914,000 $ 2,164,000
Sales revenue, percent 15.00% 20.00% 18.00% 21.00%
Total [Member]        
Disaggregation of Revenue [Line Items]        
Sales revenue $ 5,232,000 $ 5,163,000 $ 10,893,000 $ 10,296,000