I think the key is using high quality MOP buttons and washing in a delicate/gentle cycle. I've had some extra-thick MOP buttons get fudged up in a washing machine, but I didn't use a delicate wash and they're not the highest quality. The smaller MOP buttons I have are quite resilient and have never broken.
But, if you must hand wash a shirt, it's pretty simple.
1) Fill bucket with water and detergent
2) Soak and agitate shirt in bucket
3) Empty bucket and fill with clean water
4) Dunk shirt and agitate to remove soap
5) Repeat 3 and 4 until no soap is left
6) Twist/Wring shirt gently to get out most of the water
7) Hang dry
There are variations, but these are the basics.
But, if you must hand wash a shirt, it's pretty simple.
1) Fill bucket with water and detergent
2) Soak and agitate shirt in bucket
3) Empty bucket and fill with clean water
4) Dunk shirt and agitate to remove soap
5) Repeat 3 and 4 until no soap is left
6) Twist/Wring shirt gently to get out most of the water
7) Hang dry
There are variations, but these are the basics.






