Device for unscrewing lids on jars

Everyone uses canned food these days. Their modern version is a glass jar closed with a twist-off tin lid. Anyone who has ever opened such canned food knows that it is not easy to do it manually. This is due to the small edges protruding from the back of the lids. They are screwed onto a jar, the neck of which is equipped with a large thread. When closing, the lid seems to be screwed into the jar.

This method of sealing has replaced the labor-intensive classic sealing lids. Agree that it is much simpler. After all, in order to tightly and hermetically close the jar, it is enough to turn the lid on the jar with a suitable thread until it stops. No seaming machines, everything is done by hand.


On the other hand, not many people manage to open such a lid manually without damaging its edges. Today’s homemade product will help solve this problem - an opener for twist-off caps.

Materials, tools

For our miracle invention we will need:

• A small piece of wooden block with a cross-section of 20x30 mm;
  
• Used 3 or 5 L PET canister;
  
• Wooden ice cream stick;
  
• Several screws with a wide head for wood (press washer).

You need very few tools for the job - a hacksaw, a paint knife, a screwdriver, a pencil and scissors. And let’s not forget about the most important tool in the workshop – a hammer! (Where would we be without him).

Let's start tinkering

The main element of our opener is a wooden block. He will work with him from the very beginning. For ease of processing, the author used a vice, as shown in the photo.

We clamp the block in a vice and cut off a 10-12 cm fragment from it for the handle. To make the cut cleaner, it is advisable to do this with a hacksaw for metal with a fine-toothed blade.



Next, cut one end of the finished handle at an angle of 35-45 degrees. We clean the end with a small file or needle file.



It should turn out exactly like this.

From the side of the trimmed plane, mark a perpendicular line. We use a needle file as a ruler and a marker for marking.

We make a cut with a hacksaw to the middle of the block. If the groove is too narrow. It is necessary to flare it with the same hacksaw blade or a painting knife, and finish it with fine-grained sandpaper.




We cut a strip from the plastic canister with a width equal to our bar. Using a painting knife, this work can be done as carefully as possible.






It's time to use the secret weapon - an ice cream stick))

We use it to wedge the plastic tape inserted into the slot made with a hacksaw. We tap it lightly with a hammer for reliability, trying not to split the block. We cut off the protruding remains of the wooden stick with scissors on both sides.




The tape can be secured with two self-tapping screws. To do this, it is necessary to make preliminary holes at the place where they are screwed in. This can be done with a 3mm drill and a screwdriver.



We tighten the screws and get a ready-made advanced invention that is useful in the household. Now is the time to try it out. We wrap the twist-off lid with a loop and turn it towards the cut of the bar. And, lo and behold! The can opens with almost no effort.


I think that such a kitchen tool will be useful to every housewife, because it takes up very little space in the kitchen drawer, but the benefits are simply incredible!

Watch the video