Interesting vacuum chamber
https://www.youtube.com/watch?v=ViuQKqUQ1U8
I'm gonna build one.............
DIY Vacuum Pump - Repurposing refrigeration compressors
https://www.youtube.com/watch?v=-CIoY5gbt9c
Make a Vacuum Pump for AC in Cars, HVAC, or FUN
https://www.youtube.com/watch?v=CMe25d_KVP0
How To Make a Vacuum Pump from Old Compressor
https://www.youtube.com/watch?v=SxvH3EtxN-I
Fridge Compressor Fun The Opening!
https://www.youtube.com/watch?v=jF4Ta1_-HUg
Refrigerator compressor oil change / type ?
https://www.youtube.com/watch?v=3n8Kby6kgXc
Rotary Compressor Oil Change and Install
https://www.youtube.com/watch?v=jFfNx5cE1zQ
https://www.youtube.com/watch?v=ViuQKqUQ1U8
I'm gonna build one.............

DIY Vacuum Pump - Repurposing refrigeration compressors
https://www.youtube.com/watch?v=-CIoY5gbt9c
Make a Vacuum Pump for AC in Cars, HVAC, or FUN
https://www.youtube.com/watch?v=CMe25d_KVP0
How To Make a Vacuum Pump from Old Compressor
https://www.youtube.com/watch?v=SxvH3EtxN-I
Fridge Compressor Fun The Opening!
https://www.youtube.com/watch?v=jF4Ta1_-HUg
Refrigerator compressor oil change / type ?
https://www.youtube.com/watch?v=3n8Kby6kgXc
Rotary Compressor Oil Change and Install
https://www.youtube.com/watch?v=jFfNx5cE1zQ