As we gather new Builders daily I try to Post this every now and then.
If you can fold Paper...you can do this!
Ignore the "Make your own Brake" links. Unless you want another project it is much easier Renting a Brake and experimenting with building one will raise the price 2-3 times what it should.
An 8" trailer should use 2 rolls of Coil Stock @$90 each and Break rental for an 8'6" brake, (HD does have a 10'6" brake if needed) is about $50 a day.
http://serroscottycamperenthusiasts.com ... IDING.html
Happy Trails
Len