What Material to Use to Build Up Aluminum Part

[skeeljc]

This is my preferred bonding material for glass to aluminum.

https://www.amazon.com/dp/B0044F59N0?ref=ppx_yo2ov_dt_b_product_details&th=1

 

[gunsandgunsmithing]

This is my preferred bonding material for glass to aluminum.

https://www.amazon.com/dp/B0044F59N0?ref=ppx_yo2ov_dt_b_product_details&th=1

Never tried that one but...there ya go. Sounds like it should work and sets fast.

 

[hogpatrol]

Back in the steel mill days, we used Belzona in worn out pump shaft bores. Machinable and very hard.

Belzona 1111 (Super Metal)

Belzona 1111 (Super Metal) is a 2-part epoxy-based repair composite designed for metal repair and protection.

www.belzona.com

 

[tobnpr]

I'd challenge anyone to remove a glass tube that's been bonded to aluminum with a bead of pure silicone.
I'd leave the UNF intact and use the JB Weld. Leaving the threads intact will provide an immovable mechanical bond for the epoxy.

 

[Walt Krafft]

I was about to suggest silicone. The easy button.

 

[LVLAaron]

3M Auto Glass Urethane Windshield Adhesive will stick anything to anything.

 

[skeeljc]

I'd challenge anyone to remove a glass tube that's been bonded to aluminum with a bead of pure silicone.
I'd leave the UNF intact and use the JB Weld. Leaving the threads intact will provide an immovable mechanical bond for the epoxy.

The problem with silicone is the clean up. It is hard to remove the excess liquid silicone. Epoxy on the other hand is fairly easy to wipe away.

 

[muleystalker]

The problem with silicone is the clean up. It is hard to remove the excess liquid silicone. Epoxy on the other hand is fairly easy to wipe away.

removing excess is easy, just take a spray bottle with water, mist area that has excess silicone and wipe away with finger for damp cloth. finger works great, the water will keep the excess from sticking to surrounding areas while wiping it away.

 

[Dusty Stevens]

Water makes it easy

 

[skeeljc]

I really like 5 minute epoxy. Easy to use, easy to clean up, and it holds super tight.

 

[skeeljc]

So you need a sleeve 3" OD, 2.960" ID, W .060"???

McMaster 3" OD tube, .049" wall (.049" is the cheapest). Cut a .100' or so length, put it in with retaining compound, face off and machine ID to dimension. Any of the Loctite bearing retaining compounds will stick to anodize when used with the primer. BTDT
View attachment 1434011

I did get a piece or 3" x .049" wall aluminum tube. Wow, that stuff is exactly 3" OD and it is round. I will machine the threads out on a part and install a short piece with LocTite 638 bearing mount. Then I can machine the ID to fit the glass tube. That only downside is the wait for the 638 to cure.

 

[3Sigma]

3M Auto Glass Urethane Windshield Adhesive will stick anything to anything.

This is what I would use if I used an adhesive. Fills voids, bonds to glass and metal.

 

[skeeljc]

Here is one with a piece of aluminum tube (3" dia x .049" wall) put in with LocTite 638 bearing mount.