The easy way: Highlight the whole thread, copy it to your word processor, and edit out what you need to edit out, extra spaces, repetitive stuff like post/top/forum home/translate/add thread to tracer, reply to thread, subject, etc.

Just drag your cursor over them to highlight them and hit delete. Then print from your wordprocessor. You can change fonts, size, format (I use two column portrait format, 10 pt type), etc.