Heat the plywood, using your hands to put pressure on it and bend it. Once the wood is bent to the right shape, lay it into your mold and clamp it in place. Then soak towels in water and heat them in the microwave or dip them in boiling water. Lay them on the workpiece and clamp the whole thing together. Start by using an online ramp tool to calculate dimensions and determine which supplies to purchase.
Once you have built your frame according to specs, lay your plywood onto the frame. Start from the bottom. Get friends to stand on the plywood and bend it gradually as you carefully screw it onto the frame. You can use any of the methods outlined above to bend plywood in two or more directions… at least to some extent. While it is possible to do a compound bend in plywood, you have to realize that what you are trying to do requires that there be more material in the center of the bend, than there is on the outsides.
So you are limited. If possible, try your bending process with a piece of scrap wood before moving on to your main project. Spend a little time looking into the different products available for your specific project to determine which one will be best.
Aviation plywood is a good choice for projects that require bending. Originally created for building airplanes during World War II, aviation plywood is used mostly for model making today. Thin and flexible, it is made without any voids, like marine grade plywood.
This is preferable for bent projects, as there are no gaps in the core to cause uneven bends. In addition, you can look for bendable plywood products such as Radius bending plywood, which can bend in cross-grain directions as well as long-grain directions. These products are the most versatile of all. They come in a variety of thicknesses, and will provide you with the appearance you desire.
Bendable plywood is amazing stuff, and once you start using it, you might find yourself looking for more excuses to add projects to your list. The harder it gets, the harder it gets. Of course, plywoods with an increased number of layers can also be bent. There is a certain way.
Today we will tell you this way in detail. There is a special bending method especially for plywood used in an industrial area. For example, you will make furniture and you need twisted plywood, the easiest way is to steam the plywood. Steamed plywood is bent and made ready for use by special equipment. You can do this yourself at home. For example, you have 10 mm plywood and you want to bend it. To do this yourself at home, you first need boiled water and steam. The boiled water is taken into a container and the plywood layer is placed on this boiling water.
Plywood waiting for a while will begin to stretch. Or another way to do this is to use a steam iron. You can also perform plywood bending with iron with high quality and continuous steam pressing. Another method of bending plywood is to wet the plywood. For example, if you have a bathtub, fill it with water. Of course, the wetting time of plywood depends on the thickness of the sheet. You must set this time correctly.
Because if the plywood remains in the water more than necessary, the layers can be separated. This results in an undesirable result.
Another detail of plywood wetting is the use of hot water. If you use hot water, the wetting time will be shorter. For example, a water temperature of at least 60 degrees should be used. If you use cold water, the plywood wetting time will be much longer. Plywood starts to bend after being immersed in water and you can finally make the part you want and use it.
Plywood bending can occur in one step or several steps. If you want a little twist, you can do it with steam in one step. However, you may need to repeat the steam treatment several times if you want a higher inclination angle. Plywood bent to the desired degree should be allowed to dry. Plywood bent at the desired level must be fixed. The purpose of fixing is to prevent the flexed plywood from flexing again.
The bending regions are fixed with some heavy parts and the ends of the parts are tightened with rope, cloth, or tape. This method is more accurate if you want to bend thick plywood. Get a ratchet strap with S-hooks. A ratchet strap, also known as a tie-down strap, is a nylon strap with a hook on each end. Read the label to see if the ratchet strap has S-hooks. Hook the S-hooks to opposite ends of the plywood. Once the hooks are on, the ratchet strap should run down the center of the plywood, with the ratchet somewhere between the 2 hooks.
Use the ratchet to tighten the strap until the plywood is bent how you want it. To tighten the strap with the ratchet, bring the handle of the ratchet up and down repeatedly. Each time you lift up the ratchet, it will pull in some of the slack.
Continue lifting and lowering the handle on the ratchet until the plywood is bent to your desired curve. Leave the ratchet strap on the plywood overnight.
You should hear a clicking noise and the ratchet should stay open. Remove the S-hooks from the ends of the plywood. Test the bent plywood. Apply pressure to the center of the curve with your hands to see if the plywood straightens out. You can also glue additional layers of plywood to the curved plywood, using clamps to hold them in place. The more layers there are, the stronger the plywood curve will be.
It depends on orientation. Not Helpful 8 Helpful The bend on a ramp usually isn't very severe since it is usually at least at waist height let's say 36 inches. That height is the bending radius and usually plywood of that thickness can bend considerably more tight up to 24 pretty easily but sometimes much more. Not Helpful 10 Helpful Kerf bending works well with walnut where the inside radius is hidden and you have a curved frame to glue it to.
You also can steam bend if the inside radius will show. Not Helpful 5 Helpful 9. If done in pieces, yes, but otherwise no. Look into how boats or wooden kayaks are made, as this is the process you would have to use. Not Helpful 5 Helpful 2. Yes, that is the quickest way to get an accurate bend, 20 minutes of steam all over and hold it in a form.
Not Helpful 2 Helpful 0. Did you change the orientation of the layers when you laminated it together and how many layers did you end up with? What's the final thickness of say the seat?
I really like the idea but have never tried it myself I used 4 layers of BB plywood so the final thickness was about half an inch.
By kniegmann Follow. More by the author:. The design: To keep the design simple, I designed the chair to be built from three sets of parts. Minimum bend radius: When you bend a material, stress starts to build up in the part. Download View in 3D. The Minwax polyacrylic finish went on nicely and gave the chair a nice gloss. Did you make this project? Share it with us! I Made It! Answer Upvote. Reply Upvote. Just beautiful. If you don't mind me asking, how much did cost to make in materials?
I found the plywood at a lumber supply store just outside of Atlanta. WayneS Question 3 years ago on Introduction. Brown 5 years ago. Hi Kniegman, yes, glue everywhere, the mid section spacers i did cut in pieces to keep the weight low. Great instructable, congrats. The actual radius was very low, but to my surprise it really works. I was able to make a strong frame, gothic window shape really simple,fast and cheap.
0コメント