Hello! Today we’ll talk about a way to eliminate a problem that often occurs when operating guns for polyurethane foam. First, briefly about the purpose and design of the gun. The gun is designed to deliver special composition (foam) to hard-to-reach places - mounting joints, cracks and openings to be sealed.

To reduce the temperature of a direct chimney (when heating a room or a greenhouse in winter), you can install an air tubular heat exchanger on it. It is used as a convector. You can make a heat exchanger with your own hands from furniture pipes with a diameter of 25 mm. First of all, the ends of the pipes will need to be cut at an angle of 45 degrees.

Pretty simple way to get soda at home. Based on the simple dissolution of CO2 in water. To do this, we will build a CO2 generator. Its work is as follows: during the interaction of vinegar with soda, CO2 is released, then it passes into the second vessel and there it dissolves in our carbonated liquid. Just not true?

Wondered what to cook for dinner? Here is my easy-to-cook recipe for baked mackerel in the oven. The dish will definitely have everything for your family. Eating fish is very good for your health. Mackerel is very common and affordable, affordable for everyone. It is usually sold frozen.

In kindergarten and school, at home and in the circle of “skillful hands” - everywhere and always, children are happy to make bright and interesting crafts, come up with unusual things to decorate a classroom or their room, make original gifts for friends and parents, prepare works for the exhibition or competition.

Most modern household refrigerators and freezers are equipped with reciprocating compressors that are optimal in terms of efficiency and energy consumption, as well as ergonomic components (noise, customization options, equipment costs). What is inside the compressor and how does the cooling system work? What are the features of repairing these compressors?

In this master class, I’ll talk about how to sew a bow tie. The butterfly will be tied, but it will be fastened with Velcro on the back. We will need: A flap of fabric; it took 30x50 cm for my butterfly. A paper-based non-woven fabric the same size as the fabric. Pattern. Safety pins.

From the old open-end wrench (wrench), which you have not been using for a long time, you can make a convenient hinged wrench for socket heads. Working with such a tool is much more practical and easier, especially in hard-to-reach places where it is impossible to use another tool. It should be noted that the hinged collar made of the old open-end wrench is much more convenient than the classic T-shaped wrenches due to the longer lever.

The convenient mobile machine with an abrasive nozzle is easily mounted on a workbench as needed. The nozzle from the polishing machine allows the use of abrasive wheels of different grain sizes, foam rubber and others suitable for the method of attachment. Thanks to the belt drive (if there is a closed bearing on the shaft), water can be used during processing.

In this article, we will tell you how to restore an almost "hopeless" hand tool at home at minimal cost. Why is this needed? When restoring an old or broken tool, you save money, which, as you know, does not happen much. After a little mechanical refinement, even despite its "venerable age", the old instrument can still serve faithfully for some time.

To find out what color spectrum a particular light bulb emits in a house, you will need to use a device called a spectrometer. Factory models are very expensive, so you can make a homemade version from improvised materials. To make it is very simple, because in this case it will not require special accuracy.

Using a home-made USB-drill, you can make various models and blanks for "home" crafts from polystyrene and polystyrene, as well as other lightweight materials that are easy to cut. Distinctive features of this mini-tool are compactness and versatility. As a power source, different chargers with a USB connector and a voltage of 5V can be used.