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Schedule of revenue recognition - sales revenue by product line (Details) - USD ($)	12 Months Ended
	Feb. 28, 2025	Feb. 29, 2024
Disaggregation of Revenue [Line Items]
Sales revenue	$ 20,504,381	$ 19,699,886
Fluxing Systems [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 467,000	$ 724,000
Sales revenue, percent	2.00%	4.00%
Integrated Coating Systems [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 3,703,000	$ 2,889,000
Sales revenue, percent	18.00%	14.00%
Multi Axis Coating Systems [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 10,678,000	$ 10,075,000
Sales revenue, percent	52.00%	51.00%
Oem Systems [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 1,484,000	$ 1,533,000
Sales revenue, percent	7.00%	8.00%
Other Product Line [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 4,172,000	$ 4,479,000
Sales revenue, percent	21.00%	23.00%
Total Product Line [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 20,504,000	$ 19,700,000

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