Best Glue to repair this plastic

[A993LAD]

I'm not sure if this is the right place for it but hoping somebody can give me a recommendation.

One of the hinges that supports the back of one of the rear seats in my old air-cooled Porsche has cracked.

Having removed the seat back I've got easy access to the crack it aligns well and I can clamp it shut.

It is obviously the highest stress point if anybody leans against the back of the seat. Although to be honest it's very rare that anyone is in the back of the car. I think my kids must have broken this years ago when they were small and went in the back.

Is there any glue that is like plastic weld that I could put into the crack and then clamp it shut and get a reasonable repair?

[jds32]

Have a look at Qbond.

[NDA]

Is that bracket visible?

If it's hidden, you'd probably get a strong fix using a series of small cable ties - requiring the drilling of a few holes.

[A993LAD]

NDA said:

Is that bracket visible?

If it's hidden, you'd probably get a strong fix using a series of small cable ties - requiring the drilling of a few holes.

Yes it's very visible between the rear seat base and back.

[Wacky Racer]

Loctite superglue gel from Poundland.

Never let me down yet,

[A993LAD]

jds32 said:

Have a look at Qbond.

Never hear of this before but sounds good and just ordered.

[E-bmw]

A993LAD said:

jds32 said:

Have a look at Qbond.

Never hear of this before but sounds good and just ordered.

It is spectacularly good and will almost certainly do the trick.

[StescoG66]

QBond or Tigerseal should do the trick

[AstonZagato]

Is there space behind to glue another piece of plastic? I'd want to get a piece behind to tie the two together.

[Register1]

Glue it and clamp it.
Then I would be tempted to sandwich it between 2 nicely shaped 1mm stainless steel plates.
Doing the other seat bracket also to match
A few well placed M5 socket stainless countersunk hex cap heads would hold it very well, and almost look good also.

Edited by Register1 on Sunday 30th October 17:44

[Dave.]

Superglue and baking soda?

[A993LAD]

Register1 said:

Glue it and clamp it.
Then I would be tempted to sandwich it between 2 nicely shaped 1mm stainless steel plates.
Doing the other seat bracket also to match
A few well placed M5 socket stainless countersunk hex cap heads would hold it very well, and almost look good also.

Edited by Register1 on Sunday 30th October 17:44

Great idea I'll probably give that a go after gluing

[Master Of Puppets]

I would use an old soldering iron and heat weld the back of the split, then cover it with another strip of plastic and heat weld that over it,
done right it would be stronger than it was before it broke.

[hellorent]

JB weld

[essayer]

hellorent said:

JB weld

This, awesome stuff.

[ATG]

I'd probably go for some araldite reinforced with glass fibre matting. And it would probably look ste. But it is amazingly strong. I've used this to repair snapped laptop hinges where they've bust at the point of highest stress and the repair held for the rest of the life of the machine which was a good few years of daily transportation and use.

[paintman]

IF the plastic is of the type that melts if a soldering iron is put on it as opposed to disappearing in a puff of smoke my preferred option would be to melt a strip of fine stainless steel mesh into the plastic across the whole of the break.
This could then be filled & painted.

Not that dissimilar to using staples as in this youtube but using a soldering iron to melt the mesh into the plastic.
www.youtube.com/watch?v=ig9FAdMZ8Xk&t=10s

Edited by paintman on Sunday 30th October 20:39