This is a addendum to Piston Preparation Before Use http://pilotodyssey.com/pistonprep.htm

I use a file to remove most the rough edges then sand after words, I make my own sanding sticks by gluing industrial sand paper to a wood stick.

Put a little glue on the back of the sand paper, apply the sticks then I weight them down between two pieces of metal so they dry flat.

When they are dry cut them with a razor knife.

Guess your wife tired of you using all her nail files? hehe
what grit are you using?

Nail files are worthless on anything harder than a finger nail... 120 grit to do the rough in then I finish up with 320 grit.

IMO massaging the parts like the cylinder and piston edges is important to promoting oil to stay on the parts, look close at new pistons and their edges, look at the cylinder walls not only around the port openings that get a bevel but at the bottoms of the cylinder, small changes can promote better oiling, and as gas in a vapor form meets these parts better cooling.

I made a little illustration showing what I am trying to achieve when I prep parts for assembly a simply radius change goes a long way.

As the piston travels down oil is collected and pooled then distributed on parts.

Most excellent info and pix!

You are the "ONE and ONLY!"

I try to be all into this pilot odyssey thing but just can't pull off the depth of your passion.

My hat is off to you!

Most impressive stuff with the attention to detail.

Tom

AAAAAHHHHHH. Message the piston. Nice way of doing that. We all want to be like "H". Good work.

just got a new piston in the mail today, I will have to try this out. It makes alot of sense. thx for the info hoser.