Broken screw is stuck like cast

[Boolean]

You can put on two nuts that you tighten against each other with a washer in between, then you tighten everything.

Good idea - I will test it when I've gotten through the material. Battery is charging now. The drill hole is indeed also weak - perhaps a few mm, so it's important to find a thin screw.

 

[Violina]

Good idea - I will try it once I've gone through the material. Battery is charging now. The drill hole is admittedly also small - maybe a few mm so it's important to find a thin screw

Press/knock a torx into the hole instead

 

[Avemo]

If that thin material is aluminum and there's a rusted steel screw in it, I wouldn't have too much hope of getting it loose.

Is it possible to remove the part so you can work more comfortably than drilling in the ceiling? The tool you're looking for is usually called an easy-out. It's a conical left-handed threaded rod that, with some luck, can grip the hole you drill. You can also try heating it. Maybe it will loosen a bit then.

 

[Boolean]

I think the image (that I assume you are thinking of) is on the lid

Yes, the screw in the "wall" only sticks out a few mm on the inside. Two images are on the lid

 

[Boolean]

Press/knock a torx into the hole instead

Good idea - risk though that one might crack the material? Will test

 

[cpalm]

The tool you're looking for is usually called a grispitt.

I've never had any success with grispittar. At least not in smaller dimensions. They break, and then you have a much bigger problem than you had initially.

 

[cpalm]

Good idea - risk, however, that you might crack the material? Will test

Press it in with a pipe wrench, screw clamp, or similar so that you brace against the backside. I wouldn't hammer on it.

 

[Boolean]

Looks like someone has already drilled a hole...

If you heat it up properly with the heat gun, you should be able to get it out with an extractor...

I'm the one who got halfway with the drill hole. I'll google the extractor tool.

 

[Boolean]

If that thin material is aluminum and there's a rusted-in steel screw in it, I wouldn't have too high hopes of getting it out.

Is it possible to remove the part so you can work more comfortably than drilling in the ceiling? The tool you're looking for is usually called a screw extractor. It's a conical left-threaded rod that, with a bit of luck, can grip in the hole you drill. You can also try heating the whole thing. Maybe it will become a bit looser then.

I've been considering knocking off the whole panel, but the craftsman who installed it in 1967 did such a nice job with the wall plaster.
Heat is a good idea.

 

[Boolean]

Yes, the screw in the ”wall” only protrudes a few mm on the inside. Two pictures are of the lid

Correction - only the last picture is of the lid ..

 

[TechChad]

Cut off the crap with a hacksaw. Then buy a new valve and install it.

Maybe this one works:
https://www.byggmax.se/till-frånluftsdon-p317018

 

[Boolean]

Press it in with a slip joint plier, screw clamp or something similar so you brace against the back. I wouldn't hammer on that.

Unfortunately, I think the threads are stopping.

 

[Boolean]

Cut off the crap with a hacksaw. Then buy a new valve and install it.

Maybe this one works:
[link]

That's my backup plan when my patience is gone or if I slip and scrape my knuckle

 

[Dan_Johansson]

It's me who has come halfway with the drill hole. I will google the "grisprylen"

As mentioned, without a lot of heat, there's no point in even trying the grispitt....

 

[TechChad]

It's my backup plan when patience runs out or if I slip and scrape my knuckle

Cut off the crap with a reciprocating saw (or another tool that strengthens your masculinity ). Then buy a new valve in old style