The shelf in the first picture is made of red oak plywood. You can choose the wood type, color and design as you like for your project. In case if you need more help understanding this project, you can refer the source link below. It discusses various items used, steps and tips and personal experience of the author who personally built a Zigzag shelf.
This is probably one the easiest woodworking projects you will find here. Although easy, a doormat is an equally important and useful item for households. As you can see in the image below, you will only need some 2X2 wooden boards and rope to build a simple doormat. This doormat is mostly useful for outdoor and porch. It will easily remove all the mud from your shoes with just one wipe. It is also very easy to clean and looks fabulous even if it is dirty.
A small oak table is a very useful wooden item for every household. You can yourself make a nice, strong and beautiful oak table suitable for any purpose. See the image below. As you can see, it is a small, yet good enough table to be used as a coffee table, lamp stand, breakfast table, etc. You can also find many other design variants on the internet. Choose the one you want for yourself and start making it now.
Sanding the inside of a hole or curved surface can be difficult. To simplify that task, insert a 1/4 x 3-in. bolt into the pilot hole of a hole-saw cutout. Secure the bolt with a washer and nut. Using a hacksaw, cut a 1/4-in. deep slot in line with the bolt. Cut a piece of adhesive-backed sandpaper so that you can slide one end into the slot, wrap it around the cutout, and slide the other end back into the slot. Chuck the bolt into a drill, and you now have a homemade drum sander. — E.R. Comstock. How to Sand Wood Faster

The shelf in the first picture is made of red oak plywood. You can choose the wood type, color and design as you like for your project. In case if you need more help understanding this project, you can refer the source link below. It discusses various items used, steps and tips and personal experience of the author who personally built a Zigzag shelf. 

We have a small dining room area in our farmhouse that is separate from the living room and kitchen. The area is much smaller in space than our last house. I was little confused that our typical rectangular farmhouse table was not going to cut it. So, I walked in I came to know that we needed to build a round dining table. So, I searched for a plan design idea and build a very own round farmhouse dining table. I was an amazing DIY plan, I just love it!
This self-clamping table saw fence takes only seconds to put on and lets you crank the blade into the fence to create both angled cuts along board edges and extremely thin rip or rabbet cuts. With a hand- or jigsaw, cut pieces from a 1×4, making the inside width of the “L” a hair under the thickness of your saw’s fence. Drill 5/16-in. holes in the L-blocks and plywood fence and join them with two 1/4-in. x 3-in. countersunk machine screws, washers and Wing-Nuts. As always, use extra caution when you’re sawing without a blade guard. Our thanks for this new sawing angle to professional furniture maker George Vondriska. Check out these 16 genius tool hacks you need to know!
Often times at first glance a board looks straight and the fact that it is actually bowed or has some warping isn’t always obvious. So the trick to knowing for sure, is to hold the board up towards your face, with the other end on the ground, and look at it at a downward angle (as shown in the below photo). This method will allow you to see if it is bowing at all.
There is significant evidence of advanced woodworking in ancient Egypt.[1] Woodworking is depicted in many extant ancient Egyptian drawings, and a considerable amount of ancient Egyptian furniture (such as stools, chairs, tables, beds, chests) has been preserved. Tombs represent a large collection of these artefacts and the inner coffins found in the tombs were also made of wood. The metal used by the Egyptians for woodworking tools was originally copper and eventually, after 2000 BC bronze as ironworking was unknown until much later.[2]
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