What to use when 2 part epoxy fails

[LynnieLightfoot]

I need to glue some nuts to a base plate but 2 part epoxy has failed twice. Any ideas?

To explain, I am a renter, so I can't wall mount my TV. To get around this problem I've used a monitor arm attached to a desk. The mounting plate for a monitor is smaller than the one for the TV, so I need to join them together. However, as the mounting plate sits flush on the back of the TV, the nuts must stit on top of it, hence the need to glue them.

Loctite Easy Repair worked fine at first, but as the TV needs to be moved into position and then folded back against the wall when not in use, it has failed twice now. I've roughed up the surfaces before glueing, and I'm using a nut with a relatively large surface area. 

Thanks in advance for any advice you can give me.

[Noyade]

Insert a nut rivet.

This is a 6mm aluminium GasWeld rivet. The outer collar fits perfectly - absolutely flush.

[Noyade]

Four rivets in place.

Attach the plate to the telly.

Attach the monitor plate to the exposed rivets with 6mm bolts.

There will be a 9mm space between the plates.

But that wouldn't matter would it? - cause your epoxied nuts would be doing the same.

Hope that makes sense.

[Noyade]

Option 3. 

Spot weld your nuts to the TV plate.

Bolts from the monitor side - with the nuts attached.

Extra bolt length to 'feed' through your drilled holes on the TV plate.

Pushing till all four nuts rest on the plate.

Tack weld each one.

It will destroy the paintwork on the TV plate.

Which will need to be cleaned up and spray painted.

Just a Bourbon and Coke thought. 😁

[Nailbag]

Hi @LynnieLightfoot 

I think I may now understand what you're trying to achieve here which, is why @Noyade @JacobZ and @JacobZ as well as myself have to been able to find a solution. Does this sound correct?

You have two desk mounted pc monitor stands. One has a PC monitor fitted the other doesn't. You are trying to fit your TV to the 2nd, but because the back of the TV has a slight curve, the flat plate on the stand isn't fitting flat and secure. The "nuts" you're referring to are actually to be used as both a spacer to overcome the TV curvature and give something for the mounting bolts to fix to. The "nuts" have been fixed to the TV unsuccessfully using epoxy glue. Is this correct?  

Regardless of the answer we will need a photo of the back of the TV to see exactly what you are trying to achieve. Plus one of the back of the TV near the monitor stand bracket. Also what size is the TV screen, is it of a similar size to an actually pc monitor?

If the explanation is correct, you're going to need to fix mounting brackets to the monitor stand. Then use spacers/washers to potentially overcome the curvature of the TV and suitable thread type and length bolts to actually secure the TV to the brackets. The photos will help my colleagues offer more accurate advice.

Nailbag

 These are typical mounting bracket nuts integrated as part of the back casing of a slightly curved back of a TV

[MitchellMc]

Hi @LynnieLightfoot,

It appears you may be trying to use a monitor mount that is designed for a smaller appliance, such as a computer monitor that uses a 100 x 100 mounting pattern, and adapt it to suit a larger TV. Unfortunately, attempting to glue nuts to the mounting surface is not a reliable solution. Adhesives are generally not strong enough to safely support the weight of a TV, particularly once movement and leverage are introduced, and this creates a real risk of failure.

What I would recommend instead is purchasing a mount that is specifically designed to suit the mounting pattern and weight of your TV, if a compatible desk or arm mount exists. In most cases, larger TVs are only supported by wall-mounted systems rather than desk-mounted arms, as desk mounts are typically engineered for lighter monitors using the 100 x 100 standard.

I would also assume that the mounting plate currently attached to the back of the TV did not come with the arm itself, as arm systems normally include their own dedicated plate and connection method to interface safely with the arm support. Because of this, the most practical and safest solution is to replace the existing arm with a mount system that is purpose-built for your TV, rather than trying to retrofit a larger mounting bracket onto the current monitor arm.

Please let me know if you have any questions.

Mitchell

[LynnieLightfoot]

You are exactly right in your analysis Mitchell. Unfortunately, monitor arms with the correct sized mounting plate do not exist as far as I've been able to find, hence my attempts at retrofitting. 🙁

I want to thank you, Noyade, Mailbag, AlanM52 and JacobZ for your thoughtful consideration of my problem. I was hoping there was a better glue I could use, but clearly there isn't. All of your wonderful suggestions require skills and/or equipment I don't have. But in realising that, I have also realised where I can find those skills, and that's my local Men's Shed. So that's where I'll be taking my problem, as soon as they open after the holidays. 

Once again, thank you to all of you for your input.

Lyn