Using an induction heater to remove a pin

[cueguy]

I just got an induction heater and trying to use it to remove a 5/16-18 pin (he wants radial). I have used it many times up to a min each to where it smokes and set it down and try to unscrew the pin immediately to no avail. Any hints on how long this takes to get it hot enough to actually loosen the pin?

Thanks.

 

[Coos Cues]

I just got an induction heater and trying to use it to remove a 5/16-18 pin (he wants radial). I have used it many times up to a min each to where it smokes and set it down and try to unscrew the pin immediately to no avail. Any hints on how long this takes to get it hot enough to actually loosen the pin?

Thanks.

I have one too. Not impressed. I still use my good old fashioned propane torch.

 

[DeeDeeCues]

I just got an induction heater and trying to use it to remove a 5/16-18 pin (he wants radial). I have used it many times up to a min each to where it smokes and set it down and try to unscrew the pin immediately to no avail. Any hints on how long this takes to get it hot enough to actually loosen the pin?

Thanks.

Induction is wildly ineffective on non magnetic metals.

 

[tg_vegas]

DeeDeeCues is right on - induction does not work well on stainless or brass. Good old fashioned propane torch will loosen the pin easily. Just be careful not to overhead and damage or loosen the joint material.

 

[Sheldon]

Fold up a paper towel and tape it around the joint. Get it good and wet before you heat the pin and it will help keep the pin from transferring as much heat to the joint.
A vise works real well, heat the pin with a torch til the end of it is red hot then clamp it real tight in the vise and try to unscrew the pin by turning the cue. (You can get a lot of torque this way). repeat the process until it comes loose, then hit it with compressed air to cool it asap. Some will come loose after just a couple of hits, some will take quite a few (McDermott ).

 

[Dave38]

I have a small induction heater that works on 12volts, only fits just the pin. Takes some time, and it does work on SS and brass. BUT have borrowed an automotive setup and with the larger coils, that fit over the joint itself, within 20 seconds the surface was hot and the pin came out like butter. You need to place the coil over the buried portion of the pin, it will heat up SS, and Brass....just wish I had the $$$ to buy that setup

 

[CLAUD]

Being cautious (paranoid?) about overheating. I place the tip of a soldering iron on the pin and work on somethin else for awhile. It takes about 20 - 30 minutes to break the glue loose, but I've never damaged any joints or rings doing this.

 

[fish2]

Being cautious (paranoid?) about overheating. I place the tip of a soldering iron on the pin and work on somethin else for awhile. It takes about 20 - 30 minutes to break the glue loose, but I've never damaged any joints or rings doing this.

What was the wattage of the soldering iron?

 

[CLAUD]

30 watt

 

[fish2]

Being cautious (paranoid?) about overheating. I place the tip of a soldering iron on the pin and work on somethin else for awhile. It takes about 20 - 30 minutes to break the glue loose, but I've never damaged any joints or rings doing this.

Wondering which transfer more heat to the wood and joint material, High heat transfer using propane torch but takes a few minutes or low heat transfer but longer duration....

 

[cueguy]

I have a small induction heater that works on 12volts, only fits just the pin. Takes some time, and it does work on SS and brass. BUT have borrowed an automotive setup and with the larger coils, that fit over the joint itself, within 20 seconds the surface was hot and the pin came out like butter. You need to place the coil over the buried portion of the pin, it will heat up SS, and Brass....just wish I had the $$$ to buy that setup

Dave,

Thanks for this! It seems that was the issue. I was kind of worried about pu9tting it directly over the joint but that is what it needed.
Thanks again!

 

[3kushn]

This may be of no value here.
I've watched induction heating a few times.
Once at Cleveland Twist Drill where they were silver soldering carbide to a drill.
Only maybe a 1/16" beyond what needed to get red hot, got got red hot.
To me that's the beauty of Induction. Very focused/controlled.