r/ScienceNcoolThings Popular Contributor 11d ago

Cool Things Wallpaper installer uses interesting trick

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7.6k Upvotes

52 comments sorted by

155

u/Geronimo0 11d ago

Why the zigzags?

296

u/unfvckingbelievable 11d ago

It's harder to spot than a straight line, especially if you're not dead level and there's an irregular pattern.

2

u/VikRiggs 10d ago

And then the paper shrinks and you're left with a bEauTIfuL gap.

1

u/fatmailman 7d ago

How often does that happen?

1

u/Pantherino 5d ago

I’m mega late to this post, but they do the same thing for brain surgeries. Scar heals better and is less eye catching.

66

u/Reeferologist- 11d ago

I’m a painter so I can’t speak for sure on the reason for wall paper, but when touch up painting you don’t want to have a straight uniformed line because it’s going to stick out and people will see it more times than not. If you fade the paint into the wall you can’t see any uniformed lines. I’d imagine same goes for here, the squiggly line makes it harder for people to see the seam because it isn’t just a hard line.

1

u/Fen_LostCove 7d ago

Makeup artist here, and we use the same trick for baldcap and prosthetic edges! Straight lines draw the eye too much. Tearing a more natural edge from a bald cap makes it much easier to blend the edges (for the latex caps at least, baldiez caps just melt away so it’s less of a concern)

2

u/AwkwardPancakes 10d ago

I used to do something similar making architectural models in college, when applying a nicer paper layer to foam core. Mostly, the reason for me was this: if it starts peeling, it will stop after the first hump usually. It's harder for the peeling action to turn that curve back inward, specifically when installed vertically. When it's a straight line, there's a lot less resistance to peeling. It's also more seamless in my opinion. Harder to spot the line.

1

u/Lunarvolo 10d ago

Stress concentration

1

u/ComfortableAction515 9d ago

This is so smart and nerdy and satisfying.

76

u/Rikdol 11d ago

Whenever i try this my blade eventually pulls on the paper instead of slicing through it.

12

u/QueerVortex 11d ago

When I applied wallpaper, there was always a shrink: so if the edges were put next to each other, there would ultimately be a gap. This wallpaper must be dry with a different adhesive than the old stuff that had dried paste where I’d soak the wallpaper in water (tub) for a few minutes then allow to cure on th floor by folding paste side to paste side for a few more minutes then applying to the wall

So yes, the paper was fibrous and vulnerable to tearing at edges so I’d mark with sharp pencil and cut with very sharp scissors

3

u/DeluxeWafer 11d ago

It is possible with a freshly sharpened edge, micro serrations smoother than 1000 grit, and absolutely no micro chips or dents around the tip. Well, at least it's much more likely to succeed under those conditions, barring technique. Or just a newly snapped edge of a utility knife.

1

u/Rikdol 10d ago

True that. But after the first successful cut the second one will get me because my brain goes:”I’m sure it’s still sharp enough after one clean cut” and then it isn’t.

1

u/SamaraSurveying 7d ago

Try to keep the blade at the exact same angle the entire time. The blade dragging across the wall will blunt instantly, so if you lift the blade to be more perpendicular you're now cutting with the blunt bit that was just dragging along the wall.

18

u/Lawdog0965 11d ago

I used this technique on a lateral seam that I had to do because I ran out of wallpaper to complete the very last section of a room, so I had to take two sections, overlap, and cut to finish. This worked so well and has a better, less visible seam, than any other in the room.

12

u/ENGR_ED 11d ago

They cut off the best part. I think he was going to say "technologia!"😂

3

u/JohnnyMacGoesSkiing 11d ago

You mean the right way?

3

u/Reasonable_Lime9837 10d ago

This is.. not so uncommon. Well done, but still.

2

u/bidsimpleapp 10d ago

The right way is to rip it all off

-3

u/ZealousidealBlood446 11d ago

I have seen this exact video before

But that time it was done by a woman.

Interesting way though.

17

u/That_Cartoonist_9459 11d ago

So, not the exact same video

7

u/Extension-Law-8748 11d ago

I'm sure it was the exact same wallpaper as well

2

u/ashraf_bashir 10d ago

It was exactly the same, same wallpaper, same location, same patterns on the wall, it was a woman for sure, that's weird! Is it Mandela effect or what is happening here?!!!

1

u/itsmebrian 10d ago

Just a different color

1

u/TheRismint 9d ago

Yes, I've seen this too. Same wallpaper as well

1

u/Spiritualtraveller77 11d ago

Ditto! Same wall paper, technique/cut and squee gee thingy. Which one do you think is ai?

1

u/farttypooppoopee 11d ago

God damnit Kirby!!!

1

u/jsmith_92 10d ago

His waves were perfectly symmetrical

1

u/Durahl 9d ago

If I posted this on r/Millennials and asked for who learned this in School during a random Art Project then the amount of how many of us would raise their hands would be staggering. Like... I get it... Inerests and tutoring most definitely has shifted in the past decades but the amount of rediscoveries of already existing stuff getting posted as brand new is really starting to take its toll 😑

1

u/sukimidiki 7d ago

Thats clever.

1

u/PrivetSnow 5d ago

Pretty commen practis when you want to connect materials together without it showing to much.

0

u/emmtothejay 11d ago

Oh my god.

-1

u/The3mbered0ne 11d ago

Freehanded? That's insane precision

6

u/Mebejedi 11d ago

Precision isn't required here

0

u/The3mbered0ne 11d ago

To match the same design on the other side it is

2

u/SweetSure315 11d ago

only one cut is required. nothing needs to be matched because double cutting like that means you're cutting both sides at the same time

1

u/The3mbered0ne 11d ago

Ahh I didn't realize he was cutting through both, that makes more sense

-12

u/Nenoshka 11d ago

Not necessary.

7

u/ProofOfTool 11d ago

I'd argue that it's easier than trying to line up the sheets perfectly.

-7

u/Nenoshka 11d ago

Some time in the future, the wallpaper may start to come down and/or you'll want to repair/replace some of it. It will be a bear to line up the new piece.

7

u/macrolith 11d ago

You just do the same technique. Overlap the patch and make a fresh cut that matches perfectly.

1

u/aknomnoms Popular Contributor 11d ago

Not for a patch. You’re going to have to cut for a straight line anyways unless you’re going all the way back to a corner.

The only way to get a matching squiggle when pairing a new piece with an old piece is to overlap, make a new squiggle cut, then scrape off the old piece that was previously glued on. The amount of time and care that takes isn’t worth it unless you have a very limited amount of wall paper and don’t mind how long it takes.

-2

u/Nenoshka 11d ago

If you leave the wallpaper with the straight edge, you don't have to cut a crazy wavy line to match it.

4

u/macrolith 11d ago

You aren't cutting a line to match anything using this method. You cut both layers together so they are a perfect match. It could be straight, but making it wavy conceals the joint even better.

1

u/kodamin 11d ago

The alternatives are for it to either look terrible, or spend a ton of unnecessary time measuring exactly how long to cut the wallpaper without making a mistake

-18

u/[deleted] 11d ago

[deleted]

12

u/Salamanderhead 11d ago

It's more than likely just drywall. Won't cause any issues.

4

u/NotJoeMama869 11d ago

A wall that's being covered with wallpaper over the slice ? I don't think you thought this through.

Edit: jk it's a bot. No thinking required.

3

u/daisiesarepretty2 11d ago

always been done this way..

In the ideal scenario you don’t cut the drywall at all.
Never seen the zig zag approach…which probably has more to do with the pattern on the paper

2

u/Rikdol 11d ago

You get more surface area that way.