Stationary steam engine

Video of it running on steam - https://youtu.be/fyDvwZURnQI
Assembly guide - https://youtu.be/uFALHbv7AqU
Working steam engine that is able to run on steam.
Assembled with M3 screws.
Two 608 bearings support the crankshaft.
Two metal liners will need to be fabricated. I used 21mm copper plumbing pipe for the cylinder liner but any metal will work also. You can buy 21mm diameter 1mm wall thickness brass seamless pipe which will work. The valve liner I made from a seamless brass pipe.
The cylinder and valve will need a light sanding for a metal liner to be pressed in.
To seal the valve liner against the cylinder I recommend liquid gasket or wrapping the liner in teflon tape.
A 20mm O-ring goes on the piston and a 13-15mm O-ring x2 goes on the piston valve.
Gaskets sandwiched between the cylinder and heads.
Red parts are printed in pla 10% infill.
Black parts are parts that are in contact with steam, they are printed abs 10% infill.
The piston, piston valve and piston rod are printed wi