How to use this expanding fixing?

[Deleted member 174758]

Think the chippy recommended the expanding fixing because of the soft brick.

This is what happens to an umbrella fixing when properly installed into a hollow plasterboard wall and set using the setting tool:

You can readily see that the type of fixing you are using won't work at all well in solid blockwork because the "umbrella" can't readily open in the block material. The type of fixing below, the Fischer UX (designed for soft blockwork and plasterboard):

does work in the circumstances you are talking about. Is it possible there's been some confusion about which Fischer fixing was being referred to? See Fischer web site for details

 

[Roger928]

Tried these as well. Hardcore screw.
Anyone know material am drilling into? View attachment 133688


This bolt/screw thing is really strong. Just put it in.

The other two were pulling out of hole or turning when I tried to do screw up. The plug is 10mm so hardcore

That's a 6mm thunderbolt. You don't use them with plugs.
Just drill a 6mm hole.
And are the best form of fixing into masonry.

 

[purpleroad]

Yeah, it's one of the longer ones. Is it supposed to go behind the back (2nd) plasterboard and expand behind it? I am using it in these brick sized white soft things which are more crumbly and normal red bricks and brown plugs don't get a great fixing - will send photo. They arent as hard as orange bricks. I used a shorter expanding fixing before in crumbly old plaster (in an old house) where the hole was big and it worked well,

 

[purpleroad]

Can you get thunderbolts out relatively easily when you want to take them out? Best to put them in and out with a rachet?

 

[foxhole]

No problem removing, hand tightened is best to feel for a good fix.

 

[purpleroad]

No problem removing, hand tightened is best to feel for a good fix.

No problem removing, hand tightened is best to feel for a good fix.

Ok. that's good but for the metal protecting my side bolts, I best use something else so a thief a thief can't easily undo them.

 

[foxhole]

You can always round off the edges or put a blob of resin or similar on the head to prevent removal.

https://www.boardshop.co.uk/phix-doctor-putty-stix-rapid-repair-putty-misc