glue for door knobs

[Katewhitehead15]

Hi all
I'm tearing my hair out trying to find some glue to hold door knobs together. I have a metal bolt type element (a furniture joint connector type with a cap nut) and a wooden button which i'm trying to affix on the front. I started with epoxy, followed the instructions and they lasted a couple of weeks before the buttons fell off the front. I've since tried several other glues, sanded down both the button and metal to give a rougher surface to adhere too etc but all fail. Any suggestions?? They are getting, inevitably a lot of day to day wear, but aren't weight bearing or anything if literally just opening and shutting cupboard doors and drawers.

 

[Burnerman]

Give us a photo of the assembly if you can, Kate.....epoxy will stick almost everything but plastic so there's something amiss.
John

 

[Chud]

What he said ^ a photo would help...

will the glue joint be hidden if so it may be worth giving a polyurethane based adhesive a go...I'd probably go for a construction 'grab' type rather than runny gorilla type glue - something like the nemesis stuff from screwfix or evo stik 'sticks like s***' The reason I'd try these is because you're trying to glue two disparate materials together that expand/contract differently depending on temperature and humidity - a rigid bond can break over time from just this especially if subjected to additional mechanical stress.

 

[foxhole]

You don't use glue to hold door knobs.

 

[Deleted member 174758]

Agreed!

 

[Katewhitehead15]

Whoops didn't press the button to get notification of your responses. I've attached some pictures which might help.

 

[Burnerman]

Araldite epoxy resin is the adhesive needed here.....but you'll have to remove the varnish from the wood and the anodising from the aluminium.
Scratching the mating surfaces will help give a 'key' for the glue too.
If you still get nowhere consider replacing the whole set with knobs that have a woodscrew coming from the back.
John

 

[foxhole]

Have used this to fix a glass shelf to two stems with only a contact area the size of a penny.
https://www.tcfixings.co.uk/main/maincat/getCatitem/Soudal-Fix-ALL®/460/0/type_106/1/24

 

[Tigercubrider]

Could you not change the design so that you start with factory made wooden handles, or a plastic , that have a non metallic shank. Then use small wood screws in the thread holes on the buttons to screw into whatever material you have ?

Or

A short piece of dowel to form the shank.
Pre drilled then this added
http://www.thehandlestudio.co.uk/ca...-length.html?gclid=CNPnpZ7i_c4CFasp0wodKmkMOA
And the buttons fixed using four small screws through the thread holes