Linseed oil sitting in a bowl, or spread on the surface of wood, is perfectly safe. But a linseed oil soaked rag provides a vastly increase surface area, so the oxidation happens faster, and the rag can provide insulation, trapping the heat. The increased temperature speeds up the oxidation even more, which raises the temperature even more, and the runaway feedback can quickly result in temperatures that will cause the rag to spontaneously burst into flame. This isn't one of those "do not drive car while sunscreen is in place" warnings. This is one of those "keep your finger off the trigger until you have the gun pointed at something you want to shoot" warnings. Rags soaked in linseed oil will catch fire, if you don't handle them properly, and they can do so far more quickly than you might think.
During an intensive six-month course, not only will you learn all of the basics such as the different tools you will be using but also get a chance to try some of our more advanced projects. These will include how to draw up a big project such as a workbench, and French Polish your own jewellery box. You will also learn how to draw and can take part in our design courses, an invaluable part of the making process.
In this two day class we will reveal some of the secrets to tuning up a Japanese Hand Plane (Kanna) We will start with conditioning the Body of the Plane (DAI) to stabilize movement. Proper sharpening and grinding of the blade and chip breaker will be discussed and demonstrated. Custom fitting the blade to the Dai and conditioning the sole. We will...
Remember those fire safety tips you used to get in grade school, about the dangers of oily rags? It was linseed oil they were talking about. All oily rags are dangerously flammable. Linseed oil will self-combust. Linseed oil doesn't evaporate, it oxidizes. The oxidization generates heat, and the increased temperature increases the rate of oxidation.
The Classic Workbench is simple to use. The leg vise is used primarily for working the edges of boards and the ends of narrower boards. This is self explanatory. To work the faces of boards along the grain, tap up the planing stop (don’t make it any higher than necessary) and butt the end of the board into the teeth of the stop. With the right technique you can plane across wide boards without repositioning the board. You usually don’t need to tap the opposite end of the board to engage it with the stop, but in some cases, especially with rougher stock, you may need to give a tap with your mallet. Working the faces of a stack of boards is extremely quick with the planing stop since you don’t have to open and close a vise constantly. To work across the face of a board, make yourself a doe’s foot and position it at the back corner of the board, holding it down with a holdfast. The doe’s foot is simply a piece of wood with a V-shaped notch cut into one end. The bottomsurface of the doe’s foot can be lined with sandpaper or Crubber to help it stay put on the bench top. To work long boards, fasten a batten to the right leg with a holdfast and use that to support the end of the long board. We’ve found that a deadman is not necessary for the majority of work, especially on a bench of this length. For working the ends of smaller boards the leg vise can be used, but for precision work like dovetailing, we use and recommend our Moxon Vise.
I had a similar experience with running electrical power to a shed. It turned out that I could build a 12x12 shed without a building permit as long as I did not run utilities, but getting a permit opened a whole new set of requirements that forbid me from having a shed at all. And when the nosey old woman next to me kept calling the building inspector on me, it was suggested that I could run an extension cord out to the shed anytime I wanted as long as it wasn’t fastened in a permanent manner.
Thanks! Great information. As an advanced novice worker, I finally decided to build my first bench a couple years ago. After reading several of your blogs knowing full well mortised dove tale leg joinery is yet beyond my capability, I elected to build Robert Lang’s “21st Century Workbench”. I also chose his VERITAS Twin Screw Vise in the face vise position. Used an old Craftsman face vise in the tail vise position. Constructed of laminated 9/4 x 31/2″ Pecan and 60″ long because of my small crowed shop. Super happy to this point. As I mature in woodworking I may live to construct one of a different choice at a latter date, but I’m 73 so we’ll see. Thanks again for the advise.
Be careful. Single 24x60" sheets of 3/4" MDF are pretty easy to lift. A doubled sheet is manageable. The countertop - 24x72" panel of 1-1/2" oak - weighs something over 100 pounds. It takes real care to lift safely. The joined top - 3" thick of oak and MDF - is past the range that can be lifted safely by one person. Don't try. Get a friend to help, or rig a block-and-tackle.
The book is well written and easy to read. The illustrations, I'm sure were excellent in 1914 and, are still adequite now. Most of the designs seemed repetitive, though. I wish more attention had been given to lashing materials. If you are looking for that you will find almost none here. The book was fun to read and provided enough inspiration to make my brother and me attempt a large hut.