How to cut the foam rubber flat. Cutting thick foam rubber: what you can do and what you can’t do

What and how to cut foam rubber at home: an overview of methods and steps

Assembling kitchen stools, I thought why not make the seats soft. But in order to create this kind of upholstery, I was faced with the question of what to cut foam very evenly at home. After all, to finish the seat, you need to be able to correctly cut the fragment according to size. This post will detail the process.

Furniture manufacturers use special machines. You can cut any thickness of polyurethane foam, with a perfectly even seam and exact size.

Naturally, these options are not quite suitable for the home: especially when you need to cut a couple of sheets to restore furniture and never do it again.

foam, rubber, flat, cutting

In such cases, we recommend using a so-called “loaf knife” (with serrations on the blade). Its shape and length allows you to make an even cut of thick polyurethane foam. You will have to cut long enough, but as a “one-time action” method is quite suitable.

Note: under no circumstances take the advice of “craftsmen” and do not cut foam rubber with a heated wire (tungsten or nichrome). Heating foam leads to the release of phosgene, a poisonous gas. It is extremely dangerous to inhale it in a closed room.

How and what to cut thick foam rubber at home?

To mark, to make an incision, to hold a blade and cut to the end. so briefly looks the instruction on the cutting of polyurethane foam at home. Everything is simple and convenient, but only if the height of the sheet is small. And what to do if you need to cut foam 100 millimeters or more high? Consider how to solve this problem at home.

Furniture manufacturers use special machines. They can cut polyurethane foam of any thickness, with a perfectly straight joint and exact size.

Naturally, these options are not quite suitable for the home: especially when you need to cut a couple of sheets to restore furniture and never do it again.

In such cases we recommend to use a “loaf saw” (with a serrated blade). Its shape and length allow making an even cut of the thick polyurethane foam. It takes quite a long time to cut, but it works just fine as a “one time action”.

Notice: never listen to the advice of “craftsmen” and do not cut foam rubber with heated wire (tungsten or nichrome). The heating of the foam leads to the release of phosgene, a poisonous gas. It is extremely dangerous to inhale indoors.

Cutting instructions

If you follow the instructions your foam will cut perfectly. So, let’s go:

  • And since we decided to cut the foam on the base instead of the linoleum or parquet, we put it down first. First the plywood, then the cardboard.
  • On top of the layer of foam rubber that we want to cut. Make sure that the line for the trimmer of the future cut falls on the lining.
  • We take a ruler and according to the given dimensions draw a line for the trimmer, along which the future cut will pass.
  • Remove the ruler. If we cut it with the ruler while pressing it down the cut will be straight, but the edge will be as depressed as when using scissors. If you decide to cut with the ruler, do not put any pressure on it.
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Here is some helpful advice on how to cut foam rubber to get the perfect edge. If you feel that the knife began to make a kind of hooks during wiring, it means that in some place the blade blunted and not cutting through, begins to tear foam rubber, forming a strip of foam burrs. In this case you should immediately change the blade with a new one. It is best to do it without waiting for that to happen. You have made five or six passes, change the blade. They can then be used again for any other purpose, but for cutting foam rubber they will no longer be suitable. A simple cut of foam rubber with a knife is clearly shown in this video.

About the shape cutting

How to cut curved lines evenly foam rubber? It’s the same as with the straight cut. The only thing, the angle of the knife tilt to itself should be increased to the maximum, otherwise the cut parts will be a little “askew” at the edges, as in the case if you hold the plane of the blade to the non-vertical plane of the foam rubber. That’s it. Nothing complicated. The main thing. have patience and a brand knife, and the edges of cuts you get as factory-made.

Foam is a modern material, which is soft, comfortable, hypoallergenic. It is used as a filler for mattresses, furniture, is made of different density and thickness.

Now you can buy foam in specialized stores. They’ll help you cut it to the right size. But if you decide to do it at home, you need to know a few rules.

foam, rubber, flat, cutting

Bad advice about thin wire

It is better not to listen to this advice. Even if you are cutting foam rubber outdoors, you risk inhaling dangerous toxins that can kill your health in a moment. The thing is that foam rubber is not the usual plastic. To give it a foam structure, polymers are added all sorts of toxic impurities, which are completely harmless in the normal cured state and at room temperature, but instantly turn into a strong poison when heated strongly.

Yes, this material is cut in production by means of red-hot nichrome filaments. But people there wear protective clothing and respirators, or even stay in a protected operator’s booth with excellent ventilation. And as you are going to cut foam rubber at home, in the absence of such protective equipment you run the risk of poisoning not only themselves but also their loved ones.

Plus, this method is only good for straight cuts. To make a shaped one, you still have to take a knife.

Comment: How to cut foam rubber at home

I thought it would be difficult to cut the foam rubber by myself, at home. But, judging by the description in the article. everything is simple enough. Let’s try it.

As a rule, in the manufacture of polyurethane foam is cut by means of an electrically heated nichrome wire, which is done at home is highly discouraged. Because when cut in this way, the foam rubber emits highly toxic harmful substances into the air, which in their action contribute to the damage to the nervous system and the respiratory tract of the person. Therefore, in the name of preserving their health, experts recommend cutting foam rubber at home. a sharp knife.

At first it is necessary by means of application of an ordinary felt-tip pen or a marker to mark foam rubber, by means of drawing on it of small marks which then join among themselves by straight lines for what use a plane wooden lath or a ruler. Then under the foam, or rather under the place where the cut will be made, you need to put a piece of plywood, board or thick cardboard, which will protect the surface of the workplace from the formation of defects when cutting the material.

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When you cut the foam rubber, do not use a ruler, and with a precise and strong movement, along the mowing line marking foam rubber is cut with a sharp knife, which should be kept at the same time in an upright position. If the foam rubber is very thick, then at first the thickness corresponding to the length of the knife is cut, after that the cut is spread with the hands and cut again with the knife.

How to cut foam rubber with a kitchen knife

The first sign to determine that the knife needs sharpening is the formation of scoring on the foam rubber. In such a case the blade of the knife shall be replaced with a new one or the knife shall be ground. Cutting foam rubber along the curve of the scythe line, is done in the same way, but first you need to put the scythe line on it and only after that cut. As in the previous case, when cutting foam rubber the knife must be kept vertical, because if you miss this rule, the cut of the material is unlikely to be perfect. However, if you will make a cushion out of foam rubber, to decorate upholstered furniture, which will then be covered with a satin fabric, then here getting a perfect cut is not relevant.

Dismantle the distribution inside the apartment

This step usually takes the least time. There is no point in keeping the pipe inside the apartment intact, so there is no need to dismantle it. Enough just cut the tap leading to the bathtub, sink and other plumbing with an angle grinder, and then saw or split it into smaller pieces and take out of the apartment.

Dismantle the riser

Dismantle the riser must be very carefully. First you need to make a pair of horizontal cuts in the upper part of the pipe, at a distance of 10-15 cm from the ceiling

We shouldn’t saw the pipe completely, it’s better to leave a 3-5 cm section intact. Then carefully knock out the ring obtained between the cuts, with a sledgehammer.

Next, the section is filed from the bottom about a half meter away from the tee/crosspiece. After that remove the clamps that fix the pipe to the wall. Then the section is ripped off along the line of the filed, removed from its place and removed from the room.

Disassembly of the tee

If the tee is sealed with sulfur, to remove it, you need to heat it for a long time with a blowtorch or hair dryer. The sulfur grout will melt as it heats up. You need to loosen it a little bit at a time to speed up the melting process. As soon as possible, it’s removed from the bell.

If the drainpipe does not lend itself to any manipulations, it just cut off the angle grinder at a distance of 5-6 cm from the bottom spigot. The remaining part of the riser is then stripped, and the new pipes are connected to it with special adapters.

To repair a worn-out sewage system. Masonry technology depends on how the joints (the type of seal): cement ones are carefully broken with a hammer, gray ones are heated with a blowtorch.It is more difficult to disassemble than a newly assembled one, because over the years it rusts and the thickness of deposits increases.In any case it is a labor-intensive process, cast iron, for all its merits, is a fragile material and cracks under direct application of force.

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Installing the lining

Here is our dobor frozen. I trimmed the foam, removed the tape. Now I’m going to install a lining. But I will put it here at an angle of 45 degrees.

In general, telescopic trim is usually trimmed like this at right angles here. And from the top the cash goes here, like this.

But since this door already has the trim on it like this. So you have to do it like this on this side, too. How to mark. That’s how I take this and I’m going to make a half-mark here with the knife. There you go. That’s it, cutting off here and here.

I put the top one first. Then I also put the vertical ones like this with an overlap. I put it like this and mark it. That’s the way it stands, for instance. And I cut it off.

I’m going to mark it like this. Here it is, you can see it a little bit. And I cut it all off. First you have to peel off the bottom, of course, and then I put liquid nails right here on this edge. Like this. On this road edge, like this.

Here, here, and all the way around. And then I’m going to slap it on. Because if you glue the whole groove. It’ll fill in all over with this glue, and it’ll be almost impossible to get it off. It’s tight enough as it is and just needs to be fixed just a little bit. You can put the glue right here. On the wall directly, a few points. That’ll be enough.

That’s it and put it in. You can put a little bit between them.

So that’s what we got in the end. Here’s this corner.

You can use a pencil here, so you can’t see the seam. It won’t be too hard to look at. And that’s the way it is. It’s nice and clear. I’ll show you how to do the markup. And then I put the knife like this.

All. There’s a mark. Now we take the mark like this. And at right angles we hold the knife and we put it on. That’s it, now you have to cut diagonally. That’s it, we’re going to cut it. But here, because there’s a groove, it gets crooked. I just put a little piece of wood here, the thickness of this distance.

I put it here and it’s straight. And I’m sawing it off.

Well, this is what we got in the end. Here’s the bottom piece. It’s black, you can’t see it very well. I’ll show you close up.

It’s all tight, it’s all straight, no gaps. That’s the knot. That’s all, the door is absolutely ready.

All rights to the video belongs to: Roman Zaitsev

Fences for interior doors can be installed by yourself. Necessary materials for this cost inexpensive, and the necessary tools can be found even at the novice home master.

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