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Another F-20 Build


Pete H

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After some debate as to which horn sub to build, I settled on the F20 and will be doing 2 back to back.  I'm building one for a friend that will either stain it or veneer it so I'm going to try to use minimal fasteners on the outside of the cabinet.  Pictures are what they are, as I'm not a photographer and taking pictures while working on a project is a PITA :D

post-32129-0-36840000-1451571295_thumb.jpost-32129-0-31560000-1451571367_thumb.jpost-32129-0-08000000-1451571446_thumb.jpost-32129-0-66840000-1451571478_thumb.j

Edited by Pete H
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What type of wood are you working with?

Baltic Birch 18mm 5'x5' panels
 

That's thinner than 3/4" I believe.  You may have to fudge slightly.

It's minor and with this build, all of your rips are what they are and everything is laid out to specific points for the horn path so when an 18mm panel is used, you really won't end up with any appreciable difference in the horn path. I've never been able to locally obtain 3/4 BB, although, I've purchased 18mm that was labeled as 3/4 on more than one occasion.
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I normally cut one panel at a time.  My first build I cut them all at once and ended up trimming as I went.  I also now make the sides about a 1/16" bigger all around and flush cut them with a router once everything is together.  It's easier than trying to glue a perfect edge.

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is .05" really close enough though?

 

He'll be fine.  I remember one build that I drew out without measuring the thickness of my material.  After about 2 panels I realized that I had marked 3/4 of an inch and not the actual thickness of the ply.  It's a PITA.  That's another reason I don't precut pieces any more.

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