VACUUM PUMP
xx PUMP
Do investment casting in a vacuum to eliminate bubbles. Build this low cost vacuum system which uses an old compressor from a refrigerator as the vacuum pump and a half-gallon jug with no bottom as the bell jar. Est. cost: $20. LAPIDARY JOURNAL Feb 1978 (v.31#11) pg. 2346
Vacuum casting can be inexpensive. How to convert a Hydro-Aspirator and a second-hand compressor into a vacuum canister for use in lost-wax casting. Est. cost: $68. LAPIDARY JOURNAL Oct 1978 (v.32#7) pg. 1518
Tips on making your own vacuum pump (for model aircraft wing bagging) from an old refrigerator compressor. MODEL AVIATION Apr 1991 (v.17#4) pg. 48
Recycle an old refrigerator compressor into a combination vacuum pump and air pump. MOTHER EARTH NEWS #67 Jan-Feb 1981 pg. 68
Tip: How to keep dirt out of a hand vacuum pump. POPULAR SCIENCE Feb 1984 (v.224#2) pg. 134
Homemade vacuum chamber. Part 1. How to construct a system capable of achieving pressures as low as one ten-millionth of an atmosphere. SCIENTIFIC AMERICAN Oct 1996 (v.275#4) pg. 114
Homemade vacuum chamber. Part 2. Instructions for constructing two gauges to use with the vacuum system. (1) Mechanical gauge records pressures down to about one torr. (2) Pirani gauge records pressures in the millitorr range. SCIENTIFIC AMERICAN Nov 1996 (v.275#5) pg. 114
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