Woodworking is an art. You probably have to experiment with some scrap to see what actually works. It sounds like you are building a big tray with low sides and flipped over to become a table.
The table will have a nice curved edge all around but you will be hiding the beauty of the kerfed bend. It would be cheaper but you can get thinner plywood in better choice of woods.
Good luck. Reply 5 years ago. Thanks caitlinsdad I agree completely. My piece of plywood is actually 2 ft wide, but I plan to rip off 6 inches to that I can make the table more narrow, and have a 6 inch wide piece to experiment on.
I am a huge perfectionist, and I was hoping to have a mathematical equation to work from. I will still test, and I will free-hand it if no one can help me come up with an equation. But I still wanted to ask. The formula was in the comments of that link. Still a lot of variables to account for such as your machinery and the wood. The posts I have seen by people who use lasercutters to kerf it still do it by trial and error, hoping for the best.
Follow Posted by Dolmetscher I am planning out my first Instructable. It will be a bent kerfed plywood coffee table, There have been a growing number of projects out in the 'makeosphere,' where people are cutting slits or kerfs that go almost completely through a thicker piece of wood, allowing it to be easily bent.
Here is the idea all sketched out.
Plywood glass calculator?
I need help with the measurements that are in bold. Measure in 2 inches from each end of the board and draw a line. Measure in 2 inches each each side of the board, and draw another line. Thread a standard nut onto each end of the threaded rod and screw it on inches roughly, then slip a flat washer over the threaded rod. Bend each end of the board up to create almost 90 degree angles. Insert each end of the threaded rod into the holes, slip a flat washer over the threaded rod and screw on each of the four "end nuts.
Flip the table over, and enjoy. I don't know if spacing cuts close together for a small curve radius is more or less stable than placing the cuts further apart for a larger radius.Log In.
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.Kerf Bending Plywood - DIY Ottoman Table Build
Click Here to join Eng-Tips and talk with other members! Already a Member? Join your peers on the Internet's largest technical engineering professional community. It's easy to join and it's free.
Free Online Beam Calculator for Cantilever or Simply Supported Beams
Register now while it's still free! Already a member? Close this window and log in. Are you an Engineering professional? Join Eng-Tips Forums! Join Us! By joining you are opting in to receive e-mail.
Promoting, selling, recruiting, coursework and thesis posting is forbidden. Students Click Here. Related Projects. I have searched high and low for allowable concentrated loads on plywood of various thickness and joist spacing. Anyone know of such an animal? Not specifically. The APA American Plywood Asssociation has a specification that provides allowable stresses in plywood - both for stresses in the plane of the sheet and across the plane.
Most codes like IBC provide maximum spans based on uniform loads but that is not what you are looking for. The only way I know to check plywood for a concentrated load on a span of plywood would be to get the APA specification and use basic statics, analysis, etc. I got the attachment below from www. As far as I can tell, that would be a 3D analysis.Running Centers Mark-out See Full Scale Arc Templates to print full scale arc template to mark out curve, or drag Scale slider to scale if possible.
This is a geometric calculator only.
Radius™ Bending Plywood
Test cut and bend on a scrap of wood at entered dimensions and angles before using! All Inch inputs and dimensions are actual physical finished sizes unless otherwise noted. All Metric Inputs in Millimetres unless otherwise noted. If you've benefited from this free service please consider supporting Blue Dragon Children's Foundation.
Please help promote this free service - Tell a Friend about this site! Create PDF to print diagrams on this page. Click individual diagrams to remove. If you've benefited from this free service please consider supporting. Contact Us. Wall Framing. Baluster Spacing. All Centers Spacing. Kerf Spacing Wood Bending. Woodturning Segments. Gable Centers Spacings. Gable Stud Lengths. Circle Centers. Paving Circles. Masonry Arch.Beam bending formula, shear, moment, deflection plots for cantilevered beams and simply supported beams.
This calculator is based on Euler-Bernoulli beam theory. The Euler-Bernoulli equation describes a relationship between beam deflection and applied external forces. The simplest form of this equation is as follows:. The nice thing about this theory is that we can use these equations along with the boundary conditions and loads for our beams to derive closed-form solutions to the beam configurations shown on this page.
The bending moment, shear force, slope and defelction diagrams are all calculated using the above equations. Of course, it is not always possible or practical to derive a closed-form solution for some beam configurations. Beam Calculator Powered by WebStructural Beam bending formula, shear, moment, deflection plots for cantilevered beams and simply supported beams. Select a Beam. Enter Dimensions and Calculate. English inches, kips, ksi English inches, kips, ksi Metric meters, kN, kPa.
Review Results. Slope degrees. About the Beam Bending Calculator. Need more power?Calculate the size needed for a beam, girder, or header made from No. Covers any span and every load with pin point accuracy. Double check yourself with these span charts.
Works with evenly distributed loads only. There are two different types of loads. Its either going to an exterior or an interior load. In other words, it is either going to be on an outside wall, or somewhere on the inside.
The load on an outside wall with clear span trusses is exactly half the load on each wall. This will amount to twice as much load on the exterior walls compared to a building with a center wall. This calculator takes all of this into consideration.
How to Soak & Bend Plywood
You only have to select all of the loads that apply. Most interior beams need to include the roof load. If there is are any questions about anything else, then you should contact your supplier or an engineer. It has been my experience to never use a beam smaller than a two ply 2 x 8.
No matter what the specs say. These small areas are usually door opening on the interior and people are trained that these areas are the strongest place in a house to be in the case of an emergency. On longer spans the beam may require much more bearing space as indicated by this table. Beams of more than one ply must be fastened together with either nails or bolts.
Posted on by. Understanding Loads on Beams There are two different types of loads.Welcome to the Beam Calculator.
A free, online beam calculator to generate shear force diagrams, bending moment diagrams, deflection curves and slope curves for simply supported and cantilvered beams.
Select a beam and enter dimensions to get started. Then scroll down to see shear force diagrams, moment diagrams, deflection curves, slope and tabulated results. English inches, kips, ksi English inches, kips, ksi Metric meters, kN, kPa. Design multi-span beams with complex loads with WebStructural's intuitive interface. An interactive drawing area allows you to design complex, multi-span beams in minutes. Easy to read, printable and comprehensive design reports.
Choose from a wide variety of steel and wood shapes. This calculator is based on Euler-Bernoulli beam theory. The Euler-Bernoulli equation describes a relationship between beam deflection and applied external forces.
The simplest form of this equation is as follows:. We use these equations along with the boundary conditions and loads for our beams to derive closed-form solutions to the beam configurations shown on this page simply supported and cantilver beams.
The beam calculator uses these equations to generate bending moment, shear force, slope and defelction diagrams. The beam calculator is a great tool to quickly validate forces in beams.
Use it to help you design steel, wood and concrete beams under various loading conditions. Also, remember, you can add results from beams together using the method of superposition. Of course, it is not always possible or practical to derive a closed-form solution for some beam configurations. If you have a steel, wood or concrete beam with complex boundary conditions and loads you're better off solving the problem numerically with one of our finite element analysis tools.
We make elegant, powerful structural engineering and structural analysis software. Try some of our other free tools:. Select a beam. Change dimensions to recalculate. Review results. Slope degrees. Tabulated Results. Upgrade now to unlock the full power of WebStructural. Multi-span Beam Design Design multi-span beams with complex loads with WebStructural's intuitive interface. Comprehensive Reports Easy to read, printable and comprehensive design reports.
Find the Most Efficient Shape Choose from a wide variety of steel and wood shapes.The selected tariff allows for free plotting diagrams without a detailed solution. All right reserved. Online calculator for simply supported and cantilever beam. Let us know what you think about the website. Copy to clipboard Cancel. Enter the length of the beam! Do you want to delete this force? Cancel Delete. Support at this point already exists! On the left On the right.
Cancel Save Add. Support in this point already exists! On the left On the right Enter the distance of support location m. Show additional parameters The angle of roller support degree :. Load Location m :. Load Magnitude kN :. Load Angle degree :. Moment Location m :. Start Location m :. End Location m :. Leave feedback. Clear beam Save link on this calculation. Select units. Units of measurement:.
Setting the length of beam. Length of beam L, m :. Setting the support of beam. Setting the loads of beam. Setting the bending diagrams of beam. Calculate the reactions at the supports of a beam. All right reserved Online calculator for simply supported and cantilever beam.