Originally Posted by oblio9
@94HondaPrelude or lilmike:
I finally (well the wife really) finished the Murphy bed we were building. I am planning on starting my build in about 2 weeks. For the sides I am using left over 3/4" ply and have 1/2" for the interior pieces. I am planning on using PL and nails or screws. What order do you start this build in? The innermost pieces and work your way out? do you assemble any of the inner folds first and then put them in and attache them to the sides. Any insight would help. I am planning on building just one now but have enough wood for two I think if I need more power. Thanks for any help!
I tend to build horns and tapped horns from the inside out. I start with the baffle and the one of the pieces that attach to either end of the baffle. The insides of this tapped horn can be broken into two sub-assemblies with 3 or 4 boards each. Remember - though all of the cutting can be right angles, not all of the angles are right angles, so be sure to get things aligned and fastened to the back panel before the glue dries.
For 1/2 material, I use 1-1/4 brads and PL Premium, unless it is something that needs to be screwed together (odd-angle miters - none of those in this build). I typically use drywall screws with proper-sized pilot holes through the top panel when screws are needed. I am considering pocket screws on my upcoming build because of some shallow-angle miters. When I use 3/4 material for the inner folds, I use drywall screws with pilot holes and PL Premium.
Depending on the layout, I typically assemble portions of the interior and then install them as modules. Things are much easier to assemble when the parts do not want to fall over.
I almost always work alone when building subs, so clamps and jigs help a lot. I use 3D Squares
as well as some shop-made clamping jigs and a lot of clamps to hold things in place for assembly, I like this style
of clamp - it is quick to use once adjusted. I got a bunch of the Harbor Freight versions when they were on sale, they are cheap and work fine.
Build two at the same time, it will go nearly as fast as building one if you have enough room to work.