![]() ![]() This is a basic method, used on walls, ceilings, formwork etc.At 'C' he can see that the joist is too high. Then he uses his third packer as a gauge to check the height of the rest of the joists.In the sketch above, he has fixed two floor joists 'A' and 'B' and put a 20mm packer under his string line at each end.String line -String line between two floor joists. Packer under each end to give the line clearance. Line between two end points that are fixed first. Packers, all the same thickness, say 20mm. They didn't have laser levels and computerised theodolites when they built the Gothic cathedrals in Europe like the magnificent example shown on this page, built nine hundred years ago.Ī line is described by two points, the start point and the end point, and the shortest distance between two points is a straight line.Ī carpenter or a mason uses a string line between two points (nails or line blocks etc.) and he pulls the line tight to get it the shortest distance, to make it straight, with no sag.Ī carpenter can get accurate readings on a string line, by using three small The methods on this page have been used for centuries. So what I am trying to say here is that when you are looking at all the wonderful new gizmos in the hardware store, resist the urge to buy, and consider if you can do it with something simpler and cheaper. With his spirit level he would have had no set-up time, no dodging the tripod himself or with his power leads, no changing from horizontal to vertical, no charging batteries. To the best of my knowledge his kitchen cupboards look no different after using the laser than they would if he had used a spirit level (which he already had). "Levelling my kitchen cupboards" he said. I asked John what he was going to use it for, expecting something esoteric to say the least. It could project a red beam of light either horizontally or vertically onto the surfaces of his walls, when set up indoors. A small battery operated laser level, complete with tripod, "cheap at $350". I was coming to the end of a long job a while ago, and the owner brought inside his latest toy. So, you have had a good look at the photo above and you are probably wondering what it has it got to do with the subject?. ![]() If you have come here without seeing my hand tools page then check out the intro to string lines first. Hence, there’s no excuse not to make/buy and use a plumb bob if you’re in any way concerned with the quality and accuracy of whatever construction or decorating work you tackle.įeel free to drop us a comment below if you have any other questions or queries.String Line: Interior of Salisbury Cathedral. In all honesty, not only are they relatively cheap to buy, they’re simple to use and a doddle to set up, too. If you’ve decided against making a homemade plumb bob, hopefully, we’ve done enough to convince you of the merits of buying one instead to keep in your toolbox. We hope that you found this article useful. ![]()
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