Schedule of revenue recognition - sales revenue by product line (Details) - USD ($)	12 Months Ended
	Feb. 29, 2024	Feb. 28, 2023
Sales revenue	$ 19,699,886	$ 15,058,203
Fluxing Systems [Member]
Sales revenue	$ 724,000	$ 1,179,000
Sales revenue, percent	4.00%	8.00%
Integrated Coating Systems [Member]
Sales revenue	$ 2,889,000	$ 1,114,000
Sales revenue, percent	14.00%	7.00%
Multi Axis Coating Systems [Member]
Sales revenue	$ 10,075,000	$ 6,785,000
Sales revenue, percent	51.00%	45.00%
Oem Systems [Member]
Sales revenue	$ 1,533,000	$ 2,144,000
Sales revenue, percent	8.00%	14.00%
Other Product Line [Member]
Sales revenue	$ 4,479,000	$ 3,836,000
Sales revenue, percent	23.00%	26.00%
Total Product Line [Member]
Sales revenue	$ 19,700,000	$ 15,058,000