Screw & Glue Vs. Clamping?

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As our Welsh friend alludes, PB goes by numerous names, and like MDF it does range in quality.

We're currently working on a large volume commercial project for paneling and closet / office cabinets for a high-end condo project. The bulk of the project is in a fumed Eucalyptus veneer, sheets are 7ft x 8ft, and produced in Ecuador. Pretty enough face veneers - if rather dark - but the substrate is the worst non veneer core crap we've ever seen in the shop - smaller particles than OSB flakeboard, but the internal integrity is horrible once any machining made for dadoes, etc. Let's assume close to the standard 45lbs /ft^3 - a 3/4" sheet will weigh just under 160lbs, and those are architectural grade face veneers, so handling onto the beam saw and CNC, then several further production and finishing steps is "interesting"
 
Couple pics attached. Still waiting on tweeters and a few more crossover parts. Baffle is drying, so done for tonight, and work tomorrow :( Might be the weekend before it's finished.
 

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Do you guys break-in your drivers before instalation? I've got a frequency generator and plenty of amps, thinking about doing some break-in during my holding pattern. If you do break them in, what percentage of RMS power? How long? Do you fluctuate frequency, or just run at resonant frequency? Any point in tweeter break-in?

Thank You.
 
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Yes, various qualities of sheet goods available.

I don't purchase sheets from HD or Lowe's anymore.

Uniboard and Columbia Forest Products are two good names for MDF and Particle.

For a wall-to-wall TV cabinet, I used 3/4" Ultracore. Its a softwood plywood with thin layer of MDF on both surfaces. Plywood is light, stable, strong and hold screws really well. Surfaces are excellent for painting.
 
Wood products from Canada is like coffee and cigars from the Dominican Republic!

The key to the laminated products is to get both sides treated the same, don’t do that and the risk of warping is way higher.

My speakers are in therapy to help them with their bad memories...
 
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