Stirling engine Laura Material Kit

Very thick-walled test tubes made of Duranglas for the construction of Stirling engines or similar applications in technical model construction. The Schott Duran test tubes are mechanically very resistant. Excellent resistance to temperature changes means that you can also use the test tubes as a displacement cylinder for a Stirling engine without worrying that the glass will burst. You can cut the test tubes with our diamond cutting discs. Below you will find a tutorial video. The test tubes are also suitable for laboratory and medical applications. We carry the Duran test tubes in these different sizes: Schott Duran test tube 10mm x 100mm 5ml (actual size: 9,5mm diameter / 100mm long / inside 7,8mm Schott Duran test tube 12mm x 100mm 8ml (actual size: 11,5mm diameter / 100mm long / inside 9,8mm  Schott Duran test tube 16mm x 130mm 17ml (actual size: 15,5mm diameter / 130mm long / inside 13,5mm (Stirling engine Laura)  Schott Duran Test tube 18mm x 180mm 32ml (actual size: 17,5mm diameter / 180mm long / inside 15,4mm (Stirling engine Rufus)  Schott Duran Test tube 25mm x 150mm 55ml (actual size: 24,5mm diameter / 150mm long / inside 22,3mm  Schott Duran test tube 30mm x 200mm 100ml (actual size: 29,5mm diameter / 200mm long / inside 27,2mm The test tubes available from Schott are made of Duranglas. All test tubes have a flanged edge and a wall thickness of 1.0mm - 1.2mm. Please note that the test tubes do not have the dimensions specified by the manufacturer, but a tolerance of + - 0,5mm. Please note the actual dimensions given by us.

Machine reamers for the production of dimensionally accurate bores. By rubbing with a reamer, not only good shape and dimensional accuracy, but also good surface quality is achieved. This is of crucial importance when manufacturing sliding bearings in mechanical engineering and model building. The long cutting edges of the reamer have a left-hand twist, which causes the resulting chips to be discharged downwards when rubbing. Thus, a scratching of the bore surface by the resulting chips is avoided. Our machine reamers have industrial quality and can be used to grind drillings in steel, brass, copper, cast iron, aluminum and stainless steel. Please always use enough cutting oil when rubbing, which considerably increases the service life of the reamer. In model construction, these reamers are suitable for producing piston rod guides for steam engines, Stirling engines and flame eaters. The reamers are also ideal for producing bearing blocks with plain bearings or for producing cylinders with a very clean surface. If you produce the axis bore with a reamer for flywheels, the flywheel runs particularly round. Provided you have the flywheel without impact in the lathe. The machine reamers can be used both on a lathing machine and in a column drilling machine.   With long cutting edges and link spiral Maximum roundness accuracy industrial quality   These reamers are available: Reamer 1H7 / Shaft 1mm / cutting length 16mm  Reamer 1,5H7 / Shaft 2mm / cutting length 21mm  Reamer 2H7 / Shaft 2mm / cutting length 26mm  Reamer 3H7 / Shaft 3mm / cutting length 29mm  Reamer 4H7 / Shaft 4mm / cutting length 46mm  Reamer 5H7 / Shaft 5mm / cutting length 57mm  Reamer 6H7 / Shaft 6mm / cutting length 56mm  Reamer 7H7 / Shaft 8mm / cutting length 71mm  Reamer 8H7 / Shaft 8mm / cutting length 80mm  Reamer 10H7 / Shaft 10mm / cutting length 91mm  Reamer 12H7 / Shaft 10mm / cutting length 110mm  Reamer 14H7 / Shaft 14mm / cutting length 112mm  Reamer 15H7 / Shaft 14mm / cutting length 114mm  Reamer 16H7 / Shaft 14mm / cutting length 123mm  Reamer 18H7 / Shaft 14mm / cutting length 135mm Reamer 20H7 / Shaft 16mm / cutting length 145mm  Reamer 25H7 / Shaft MK3 / cutting length 174mm  Reamer 26H7 / Shaft MK3 / cutting length 178mm 

Thanks to their square grinding, our machine thread drills are also suitable as hand-held tap drills. You have the choice between through-hole tap drills (blind hole drills) and basic drill tap drills. The through-hole tap is suitable for through holes where the chips can fall out. Taps for through holes have a longer cut but are more stable than basic hole drill. The ground hole drills are ground with a right-hand twist, which causes the chips to be ejected upwards, which is of course an advantage for ground holes. They have a very short cut to cut the thread as far as possible into the bore and to create a thread that is as long as possible. However, it should be noted that the stiffness of the taps is significantly lower in the case of the sizes M2 and M2.5. The taps are made of HSS steel and are suitable for threading in steel, brass, plastics, copper, cast steel, aluminum and stainless steel. If you always use sufficient cutting oil during the thread cutting, the service life of the taps is considerably increased. Particularly when cutting small threads in model construction such as M2, M2,5 or M3, we recommend our round winder. This allows a safe and accurate cutting of threads with a clearly reduced risk that the tapping tool breaks. If you want to drill a core hole but do not have a table book or a thread table, this is no problem. There is a simple rule of thumb for metric control threads. Just take the diameter of the tapping tap times 0.8. Example M5 = 5mm diameter x 0.8 = 4mm core hole drill. Machine thread tap HSS With square cut (can also be used as a hand-held drill) right hand cutting industrial quality You can choose between two different thread-cutting variants, namely through-hole tap and basic drill tap. The following taps are always available: Gewindebohrer Durchgangsloch M2 Gewindebohrer Durchgangsloch M2,5 Gewindebohrer Durchgangsloch M3 Gewindebohrer Durchgangsloch M4 Gewindebohrer Durchgangsloch M5 Gewindebohrer Durchgangsloch M6 Gewindebohrer Durchgangsloch M8  Gewindebohrer Grundloch M2 Gewindebohrer Grundloch M2,5 Gewindebohrer Grundloch M3 Gewindebohrer Grundloch M4 Gewindebohrer Grundloch M5 Gewindebohrer Grundloch M6 Gewindebohrer Grundloch M8  

These mini boring bars are ideal for internal turning. These internal turning tools are made entirely of carbide and have a cutting geometry that allows them to be plunged into the material without pre-drilling. This is high-quality industrial quality. The mini drilling rods are used. They were used on a CNC machine and will be replaced after a certain period of time. Only minor signs of wear can be seen. They are still very sharp and the remaining sharpness is completely sufficient for working on brass, aluminum or steel. In addition, the cutting edge can be re-sharpened relatively easily. A suitable tool holder for the boring bars can be found here. We also use these turning steels for internal turning in our workshop and are very impressed by the properties and possibilities. The following dimensions are available. Mini drilling rod 3.5x17  Minimum inner diameter: 3.5mm / Maximum immersion depth: 17mm / Total length: 30 mm Mini drilling rod 4.7x22  Minimum inner diameter: 4.7mm / Maximum immersion depth: 22mm / Total length: 35 mm Mini drilling rod 4.7x32  Minimum inner diameter: 4.7mm / Maximum immersion depth: 32mm / Total length: 45mm Mini drilling rod 5.6x22  Minimum inner diameter: 5.6mm / Maximum immersion depth: 22mm / Total length: 35mm Mini drilling rod 6.5x27  Minimum inner diameter: 6.5mm / Maximum immersion depth: 27mm / Total length: 40 mm  

The model of the “Danni” horizontal steam engine consists of a stable frame to which the double-acting steam cylinder is connected. The cylinder of the steam engine is controlled via an eccentric and a round slide. This compact yet powerful steam engine is ideal for operation with a steam boiler, but can of course also be powered with compressed air. If the kit is carefully manufactured and without load, the machine starts running at just 0.1 bar. The “Danni” is also equipped with a cord pulley with two diameters, so that it is also very suitable for driving drive models such as circular saws, drills or hammer mills. The construction plan and instructions for this steam engine are very comprehensive, detailed and easy to understand. This makes the kit not only suitable for model building professionals but also for newcomers to technical model building. The construction instructions go into the production of each component. For the model builder who has always been want to build steam engines yourself Machine "Danni" definitely a good choice. But even advanced model makers will enjoy this visually appealing single-cylinder model. It represents an interesting addition to any model machine park and definitely belongs in every collection. The cylinder of the model steam engine is made of brass, the piston is made of bronze. Piston rods and sliders are made of stainless steel and the flywheel is made of cast iron. All other parts are made of brass, as proven in steam model making. The flywheel was manufactured in steel casting using the lost wax process, it is extremely precise and cleanly cast. Included in the scope of delivery of the Danni steam engine material kit Milled oak base plate Finished milled parts Brass, bronze, stainless steel and silver steel raw material for the turned parts Flywheel cast steel All required screws, nuts and grub screws Construction plan model steam engine "Danni" drawings (9 sheets) and construction instructions (6 sheets) Dimensions of Danni steam engine Height with base plate: 100mm Length with base plate: 160mm Width with base plate: 100mm Piston diameter: 15mm Piston stroke: 18mm Flywheel D.: 80mm Only a few tools are needed to build the “Danni” steam engine material kit. A small lathe and a small drill are completely sufficient. If you choose the cast flywheel, your lathe should be large enough to turn an 80mm flywheel on the outside. If this is not the case, select the milled flywheel that is already finished on the outside diameter. There should also be a gas burner for soldering larger parts. M2 and M3 taps and M2 and M3 cutting dies are also needed. You also need reamers 4H7, 6H7, files and a drill set. A detailed Construction report on the steam engine “Danni” can be found in our Bengs model building magazine. On the page you will find many pictures and texts with details and suggestions on how the components of the steam engine can be manufactured.