Brass Inserts

[Rodney]

I just installed a brass insert(my first) in a shaft. I must have used too much epoxy because there was a small piece attached to the bottom on the insert. I ran my tap in the threads, knocked it loose, and then drilled it out.

I was just looking for advice on how to avoid this problem. I know I can use less epoxy, but I want to be sure the insert does not back out, or loosen up.

Thanks in advance,
Rod

 

[bkkpool]

I just installed a brass insert(my first) in a shaft. I must have used too much epoxy because there was a small piece attached to the bottom on the insert. I ran my tap in the threads, knocked it loose, and then drilled it out.

I was just looking for advice on how to avoid this problem. I know I can use less epoxy, but I want to be sure the insert does not back out, or loosen up.

Thanks in advance,
Rod

Less epoxy. It does not require a lot of epoxy to hold the insert in place. If you are concerned with the insert loosening you could cut grooves in the threads of the insert. The epoxy will flow through these grooves and will give more torque out strength but this is not required. Good luck.

 

[Cue Crazy]

You could apply epoxy only to the insert, that way the epoxy only pushes up. Another way if that's not enough coverage, would be to thin the epoxy in the hole and apply more to the insert. Probably just too much epoxy in the hole. Of the inserts I have put in, the tighter the fit, the less glue I use. Sometimes they snug up so well, you could almost get away without the glue, but I use it anyway. There are other ways I am sure, but the above works for me. Good Luck Greg

 

[Rodney]

I will try less epoxy next time. Not having any experience with the inserts, I wanted to make sure it would not come loose. The insert fit very tight, and I guess less epoxy would have been fine.

I have been using the radial pin, but someone ordered an extra shaft for a meucci. I just finished the shaft, and no problems except too much glue.

Thanks, Rod

 

[lignum]

how about using inserts that do not have a hole right through them ?
Most here are that way but then again in Australia we make mostly snooker cues .

forgot to say , the other way around it is to put some threaded rod in the insert when fitting it , no problem then.

 

[Jon]

Or if this is an ongoing problem, buy some of the "plug" style inserts, with no inside threads.
Center drill it and drill an undersized hole.
Glue it in.
Then re-center drill and drill/bore/tap the insert.
There should be:
1) No problem with the glue.
2) Perfectly aligned inside threads.

 

[paul fanelli]

I just installed a brass insert(my first) in a shaft. I must have used too much epoxy because there was a small piece attached to the bottom on the insert. I ran my tap in the threads, knocked it loose, and then drilled it out.

I was just looking for advice on how to avoid this problem. I know I can use less epoxy, but I want to be sure the insert does not back out, or loosen up.

Thanks in advance,
Rod

Hi, Rod.

Screw the insert almost all the way onto a threaded rod, leaving a pocket at the bottom of the insert, run a lock nut up against the top of the insert. Now fill the pocket with wax and heat the insert til the wax melts and fills the gaps . Coat inside and outside threads with glue and screw in. Glue sets, unscrew rod, no glue in threads..Must make sure that nothing in the butt seats against the face of the insert, which will act like lock nuts and tend to unscrew the insert.

Note that the pin in the butt must not be so long as to screw in past the end of the insert, or you cannot use above method!

paul