A strategy to put a piston in a cylinder first, and to let a piston pin go through later.
I failed, so I made a notch in the skirt of the cylinder.

I sharpened it with a sander, but can sharpen it fast.
It is a feeling that it collapses rather than sharpen.
The casting will be such feel.

The piston pin is now passed.

But, centering the core, matching the piston and the hole of the connecting rod,it is difficult to pass the piston pin.
The oil ring will soon get out of the sleeve.

And a thing to put Retaining_ring of two cylinders of the middle in is difficult.
I failed several times.I bent three of the eight oil rings.
There was no choice but to reuse it.
If the sealant dries, I wipe it off once again and am repetition that I paint already once.

And …

At last it entered!

I’m about to cry.
This song is flowing in my head.

https://youtu.be/t1yzIeBRh5o

The cylinder was completed.
I have assembled a piston ring on the piston and assembled a piston on the connecting rod.
I try to put a piston in the cylinder, but it does not fit in.

This piston ring is tight with tension.It protrude from the ring groove by default.

I cut empty cans and made it a piston ring compressor.

But the cans are also fit together and it will not fit in.
I used an aluminum can, but it is thin.
It might have been successful if it was a thick can, such as a spray can.

The piston ring compressor I have can not be used dimensionally.

I polished the chamfering of the skirt of the sleeve smoothly, but there is no effect.

I decided to put in a piston first.

Oh my god!
Piston pin can not be passed through.
Also the liquid gasket has dried up.

A full day passed just to put a piston.
I want you to return the time.