Revenue Recognition - Sales Revenue by Product Line (Details) - USD ($)	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Disaggregation of Revenue [Line Items]
Sales revenue	$ 17,132,710	$ 14,832,877
Fluxing Systems [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 691,000	$ 798,000
Sales revenue, percent	4.00%	5.00%
Integrated Coating Systems [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 1,182,000	$ 4,219,000
Sales revenue, percent	7.00%	28.00%
Multi Axis Coating Systems [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 9,912,000	$ 5,614,000
Sales revenue, percent	58.00%	38.00%
Oem Systems [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 2,381,000	$ 1,582,000
Sales revenue, percent	14.00%	11.00%
Other Product Line [Member]
Disaggregation of Revenue [Line Items]
Sales revenue	$ 2,967,000	$ 2,620,000
Sales revenue, percent	1700.00%	1800.00%
Total Product Line
Disaggregation of Revenue [Line Items]
Sales revenue	$ 17,133,000	$ 14,833,000