In your magazine (No. 5, 1974), we wrote about how to extend the life of the aerosol can using a Bicycle valve. Here is another diagram of a homemade spray paint suggested by our reader A. by Malmakov from Alma-ATA region.
Homemade spray gun:
1 — shut-off valve-needle, 2 — trough 3 — filler plug 4 — valve, 5 — tube, 6 — handle, 7 — paint.
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