Congratulations professor, a true master class, especially in the casting of the very well calibrated pallet, it works both with a vacuum cleaner and a water pump, very top.

God bless you.I always see videos of gambiarras made by people from abroad, I rarely see an interesting Brazilian, but Professor is already at the Hard level.

Congratulations my brother, you are very good at what you do, I really liked the part of casting the pades to throw the water.

May God continue to bless your life.I really liked it, it held me until the end.

I am also retired in machine building and I have always done pneumatic automation, the project was top notch congratulations to our Brazilian, showing our ability to adapt things.

This was a pleasure to watch like finding the missing link between mechanical engineering and practical application.

Especially watching the manufacturing process and balancing of the impeller using simple tools.

Very cool, watching to learn how to make the bomb and I learned a lot of things, but the bomb itself, I don’t think I’ll ever ride it.Congratulations.Wordless. Only praise.When you were making the paraffin mold, I thought it would be the pump rotor. Anyway, I thought the idea was really cool. A tip for you who do casting is to use Styrofoam as a mold.