Note: I later discovered that the clamps and pipes can be bought online for onethird! of the price that I paid at the hardware store cutting the material cost by half ($150). Here are some photo’s of the table and the building process. I was able to build it for $300 with eight planks of scaffolding wood (8″ wide), three planks 2.5″ wide, 6 galvanised pipes one meter length (28mm thick), four T-clamps and four supports clamps. Looking at the image I thought it is not very difficult to make even with simple tools. The desk is really nice but is also very expensive (about $1500). The L-shape desk will fit perfectly into the corner saving a lot of room. While searching on the internet I found an L-shape desk from reclaimed scaffolding wood on Etsy. Since my electronics hobby is expanding, as hobbies tend to do, the small size of the desk became a burden.
#Homemade scaffolding design portable#
Cheval de frise, a portable frame covered with many long iron or wooden spikes used in medieval times to deter cavalry.The desk that I used as an electronics workbench is rather small.The arms were equipped with square "feet" to prevent sinking into the ground, as well as notches for attaching barbed wire. (This pattern forms the axes of an octahedron.) Two arms of the hedgehog were connected in the factory, while the third arm was connected on-site by M20 bolts. Industrially manufactured Czech hedgehogs were made of three pieces of metal angle (L 140/140/13 mm, length 1.8 metres (5 ft 11 in), weight 198 kilograms (437 lb) later versions: length 2.1 metres (6 ft 11 in), weight 240 kilograms (530 lb) joined by gusset plates, rivets and bolts, or welded together into a characteristic spatial three-armed cross with each bar at right angles to the other two. Its effectiveness lies in its dimensions, combined with the fact that a vehicle attempting to drive over it will likely become stuck (and possibly damaged) through rolling on top of the lower bar and lifting its treads (or wheels) off the ground. The hedgehog is not generally anchored to prevent movement, as it can be effective even if rolled by a large explosion. Nevertheless, the metal hedgehog was used as a quick road-block against wheeled vehicles. As many as 40% of attempts at breakthrough were successful therefore the army developed new anti-tank obstacles for the border fortifications instituted during the Cold War. Postwar tests conducted by the Czechoslovak army proved the low efficiency of the metal hedgehogs against heavy armored vehicles such as the Soviet ISU-152 and T-54 or German Panther. Vehicle barrier at the US Mexico border, which resembles Czech hedgehogs Known as Rhino tanks, these proved very useful for clearing the hedgerows that made up the bocages across Normandy. During the invasion of Normandy, the Allies cut up sizable numbers of intact and wrecked hedgehogs and welded them to the front of their M4 Sherman and M5 Stuart tanks. Czech hedgehogs thus became a symbol of "defense at all costs" in the Soviet Union hence the memorial to Moscow defenders, built alongside the M-10 highway in 1966, is composed of three giant Czech hedgehogs.Ĭzech hedgehogs were part of the German defenses of the Atlantic Wall. Czech hedgehogs were especially effective in urban combat, where a single hedgehog could block an entire street. They were produced from any sturdy piece of metal and sometimes wood, including railroad ties. The Czech hedgehog was widely used during World War II by the Soviet Union in anti-tank defense. Therefore, only the oldest sections of the Czechoslovak defensive line, built in 1935–1936, were equipped with concrete hedgehogs, and usually only in the second line. Once they were fragmented, the debris provided more cover for the enemy infantry than did their metal counterparts. However, the concrete hedgehogs proved ineffective during tests as they could be substantially damaged by machine-gun fire. The first hedgehogs were built of reinforced concrete, with a shape similar to later metal versions. The hedgehogs were originally used on the Czech– German border by the Czechoslovak border fortifications – a massive but never-completed fortification system that was turned over to Germany in 1938 after the occupation of the Sudetenland as a consequence of the Munich Agreement. The Czech hedgehog's name refers to its origin in Czechoslovakia.