Yes, a homemade instrument can sound as good as a shop bought one, even better. If your living doesn't depend on it you don't have to charge for every hour spent on it and your skill level can be just as high.

I know a woodturner who is also a shepherd. Every day when he goes out he takes a couple of pieces with him and as and when he sits on a hill, watching his flock and polishing them. The result is a finish to kill for and he always sells out but it is "found" time. If he charged for the hours he spent getting that finish his prices would be way more and he wouldn't sell as well. Same with hobby instrument makers.

Steve