Adhesive for bonding brass to steel / Drill press knobs

[markT]

Bought plastic knobs from McMaster-Carr that have brass 3/8" UNC threaded inserts. I drilled them out so they would slip fit over the ~7/16" steel round bar for the handle(s).
What is a good adhesive / epoxy to bond the drilled out brass insert to the steel rod(s)?

 

[tobnpr]

Plain JB Weld or whatever epoxy you have on hand- metal to metal is as easy as it gets. Just make sure you've got some clearance in there. If it's a snug slip fit, cyanoacrylate (crazy glue).

 

[paperpuncher]

Loctite 638 retaining compound

 

[LVLAaron]

Wood glue would probably work. Literally, any adhesive will be fine.

 

[Dusty Stevens]

Ruff both surfaces up so the epoxy has some teeth

 

[shortgrass]

Ruff both surfaces up so the epoxy has some teeth

and de-grease both parts completely!

 

[Ksracer]

Well, since this is a gunsmithing forum....

Dial the 7/16 bar into the lathe "dead nuts"...

Cut a square shoulder.

Thread the end 3/8-16 to a class 3A fit.

Post a pic of your work online.

Argue about how you should have used a spider instead of a 4 jaw.

Argue some more about how a you should have cut a 2A thread so the shoulder could properly align the plastic ball.....

How do you know it's 3A? Wires are junk, I only use thread mics....

Torque the plastic ball to 25ftlbs, breaking 1 of them....

Super glue it back together, but don't tell anyone.

The broken ball drives your OCD nuts, so you spend $1700 on a new drill press that has 27 speeds and power feed....

 

[WSnyder]

Loctite 380 Black Max

 

[markT]

 

[tobnpr]

^^^
Classic, there...
Does the VS drive still work?

 

[markT]

^^^Yes it does.. Dang thing looks like "h"-"e" double hockey sticks, but runs smooth a new machine. Maybe one day I'll clean it up and paint it... Right now, new wiring, new knobs.

 

[markT]

Got her rewired and with new balls ( knobs)

 

[markT]

@tobnpr, I didn’t notice that one of the handles was broken off on the veritable speed adjustment. Drilled out the broken stud and made new studs from bolts. Ordered 3/8"-16 threaded knobs.
Much easier to adjust and looks a whole lot more better.