Looking for story where MC builds a spaceship from the remains of several others.
Ka Hmnd has a few that might fit
https://storiesonline.net/library/author.php?name=Ka_Hmnd&sf=alpha&so=asc
'Drone Fighter' by Ka Hmnd
https://storiesonline.net/library/storyInfo.php?id=10885
'Fighter Pilot' by Ka Hmnd
https://storiesonline.net/library/storyInfo.php?id=10244
'A Poor Boys Spaceship' by Ka Hmnd
https://storiesonline.net/library/storyInfo.php?id=76824
'Cargo Master' by Ka Hmnd
https://storiesonline.net/library/storyInfo.php?id=76813
'Fighting Machine' by Ka Hmnd
https://storiesonline.net/library/storyInfo.php?id=10590
Working my way thru Ka Hmnd now
Good luck, that will take a lot of reading. You also might want to read some of his stories writing as Kenneth D. Hammond.
"At seventeen, Kenneth D. Hammond joined the Army and went into the infantry. He spent seventeen years in many places around the world, doing many things. Kenneth retired as a staff sergeant and moved to Las Vegas, Nevada."