Homemade Vacuum Pump

[suther51]

TM51, to bad you are not around the corner. My boss has a pile of hdpe drops from 4" to 36" or bigger (pipe that is) nearly the size of a small house. I can not imagine what he is saving the drops for but they have come in handy as concrete forms several times. The businesses use for the hdpe is as rock shield for insulated (polyiso foam, foam glass, mineral wool, areogell, ect. ) steam lines, chilled water, some times cryogenics. Got the old electric cookstove from the house for the shop, thinking of trying to make some of the melted n molded plastic projects I have seen here.
Eric