An essential part of any carpentry tool kit are special carpenters pencils. No decent chippy would be seen dead without a pencil behind his ear! They are pretty much essential for marking out rough framing carpentry and roofing work because normal pencils wear out too quickly especially when working in the wet and can very easily snap when working with rough sawn timber. Ever wondered why they are flat? Made with a thicker and harder lead to last longer than normal pencils, they are manufactured with a flat design so that they don't roll away from you when put down on an uneven surface or sloping roof!
That isn't the only reason their shaped like that, the width and thickness have a specific reason two;. Knowing these dimensions means I can use them as a quick measuring guide, or even for spacing things like decking boards at perfect intervals. In the picture on the right I used them along with the decking clips to make sure the gaps between decking boards were perfectly even as I went along fixing them to the joists.
OK so you'd need two to do this, but you can use the width of the carpenters pencil to scribe timber in for a perfect fit. For more handy instruction on proper tool use, visit the collection of how to use tool guides from Johnson Level. Your sharpening tool can either be a utility knife or a chisel. Important: always keep the sharpening tool pointed away from you. Place the sharpening tool against the pencil. Push the blade of your tool into the pencil and away from your body in a whittling style.
Continue cutting off shallow slices until the pencil lead is exposed. After the slots are cut, the blanks are moved by a conveyor to a machine that places a very thin layer of glue into the slots that were cut in the prior step.
After the gluing, it makes its way down the conveyor and every other wood blank is pushed onto a different conveyor forming 2 lines of blanks with slots cut and glue applied. The blanks in one of these lines will get graphite dropped into the slates. The graphite arrives at then pencil factory in pre-cut sticks based on whatever size pencil is being produced. These sticks are loaded into a piece of equipment that sorts them so that when the wood blank passes under it with the fresh glue, the sticks can be easily placed into the slots that were recently cut.
Now the blanks that have the graphite go through a second glue machine that applies additional lines of glue over the entire piece of wood. The second lane of wood blanks which do not have graphite get flipped over and then set onto the blanks that has the graphite — thus making a pencil sandwich. From here they go to a press that applied pressure from both sides and holds them there for several minutes for the glue to dry.
Next the blanks go through an additional cutter that slices the blanks of wood into several individual pencils. After a quick paint job and packaging, they are on to a truck and off to a store. The most common shape of a pencil is the round version that you are use to from school. A carpenters pencil is different in shape in that it is more of an elliptical with long flat sides. Carpenters pencils are flat in order to keep them from rolling off the surface the carpenter had placed them on.
Many times a carpenter or woodworker is holding multiple items in their hand while marking something. They needed to be able to quickly lay their pencil down but know that it will remain in the same spot and not roll away. Thus, the carpenters pencil was born. Another different design feature for the pencil is the fact that the graphite inside is shaped like a thin rectangle similar to the actual pencil. This allows the carpenter to have a wider writing area for marking.
0コメント