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What is the purpose of a torsion box?
It helps in preventing torsional bending on ships due to the torsional moment on ship caused by dynamic movement of the waves. Helps in avoiding racking effect caused by the sheer stress on the vessel structure.
What are the benefits of a torsion box workbench?
Tools – No jointer, no planer, this bench can easily be made with a minimal tool set. The top is flat and stable, never needs to be flattened. This design is extremely rigid, no chance of racking. The leg-vise chop is also a torsion box, lending the same benefits.
What do you understand by torsion?
Definition of torsion 1 : the twisting or wrenching of a body by the exertion of forces tending to turn one end or part about a longitudinal axis while the other is held fast or turned in the opposite direction also : the state of being twisted. 2 : the twisting of a bodily organ or part on its own axis.
What is a torsion box workbench top?
Instead of having a conventional, solid top, this benchtop is a torsion box. It consists of grid sandwiched between a plywood top and bottom. It’s a proven construction method that’s strong, yet easy and inexpensive to build.
What are the advantages of torsion?
Torsion allows repositioning of the shell, bringing the centre of gravity back to the middle of the gastropod’s body, and thus helps prevent the animal or the shell from falling over.
What is a torsion box shelf?
A torsion box is a simple grid of slender ribs glued between thin plywood skins. It makes these shelves stiff and flat, yet incredibly light. This rigid architecture means torsion-box shelves won’t sag or twist, and they can be mounted without any external support.
What size corestock for a torsion box?
A flush door is an example of a torsion box. I use 5/16″ thick poplar for the skin of my torsion boxes. The width of the corestock is the thickness of the torsion box less the thickness of the skins. If you want a 3″ thick table top and you are using 1/4″ plywood skins, the core size is 5/16″ x 2 1/2″.
What is the skin of a torsion box made of?
The skin is usually plywood or MDF. The core that industry uses is a honeycomb of paper. The skin’s top and bottom are held to the core with PVA glue. A flush door is an example of a torsion box. I use 5/16″ thick poplar for the skin of my torsion boxes.
How do you glue plywood torsion boxes together?
Glue the torsion boxes together by sandwiching the edging and the grid section between the plywood skins. This is a complex glue-up, so use glue that won’t dry too fast and a roller to spread it quickly and evenly. Clamp the torsion boxes between box beams.