4. Costs and Estimated Earnings on Uncompleted Contracts: Schedule of Amounts are included in the accompanying balance sheets (Details) - USD ($)	12 Months Ended
May 31, 2024	May 31, 2023
Details
Costs and estimated earnings in excess of billings	$ 4,356,565	$ 4,124,182
Billings in excess of costs and estimated earnings	5,601,274	1,992,470
Costs incurred on uncompleted contracts, Net	$ (1,244,709)	$ 2,131,712

Represents the monetary amount of Billings in excess of costs and estimated earnings, during the indicated time period.

No definition available.

Name:	fil_BillingsInExcessOfCostsAndEstimatedEarnings
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration