disaster has struck

whammo57

whammo57

Kim Walker
Silver Member
I took one of my cues back in for a simple refinish. There were gouges and scratches down to the wood.

Put it in my spinner and sanded it down to the wood and put a few coats of sealer on it and let it spin. I came back in an hour and saw that the threaded mandril backed off about 1/2 inch while it was spinning the SS pin was flexing and broke in half.

So to replace the pin, I heated the 3/8 in of pin that was sticking out with a propane torch.

Well the end of the cue started on fire and I had to squirt some water on it to put out the flames.

But .... I got the pin out.... success.

So..... replaced the joint cap and bored and plugged the end of the butt. Drilled and tapped the butt and installed a new pin.

re sanded and it has the finish on it now........ looks brand new................

Changed out the threaded mandril to a slip fit so that can't happen again..........

let that be a lesson to me...................

LOL

Kim
 
whammo57 said:
I took one of my cues back in for a simple refinish. There were gouges and scratches down to the wood.

Put it in my spinner and sanded it down to the wood and put a few coats of sealer on it and let it spin. I came back in an hour and saw that the threaded mandril backed off about 1/2 inch while it was spinning the SS pin was flexing and broke in half.

So to replace the pin, I heated the 3/8 in of pin that was sticking out with a propane torch.

Well the end of the cue started on fire and I had to squirt some water on it to put out the flames.

But .... I got the pin out.... success.

So..... replaced the joint cap and bored and plugged the end of the butt. Drilled and tapped the butt and installed a new pin.

re sanded and it has the finish on it now........ looks brand new................

Changed out the threaded mandril to a slip fit so that can't happen again..........

let that be a lesson to me...................

LOL

Kim
Click to expand...

OMG, I would pay to see a video this!!! I am sorry for your misfortune, honestly I am but the picture in my mind of the cue on fire is just too much. I was a paining contractor and refinisher my whole life and have had many crazy mishaps in my career. Nothing you can do sometimes, shit happens!
 
Quesports said:
OMG, I would pay to see a video this!!! I am sorry for your misfortune, honestly I am but the picture in my mind of the cue on fire is just too much. I was a paining contractor and refinisher my whole life and have had many crazy mishaps in my career. Nothing you can do sometimes, shit happens!
Click to expand...

I wish I had taken pics........ it would have been good for lots of laughs..... at least it turned out ok.........

Kim
 
I have a hard time imagining the pin breaking in half .
What happened to the tailstock pressure with the live center ?
The cue spun in suspension mode ?
 
Quesports said:
OMG, I would pay to see a video this!!! I am sorry for your misfortune, honestly I am but the picture in my mind of the cue on fire is just too much. I was a paining contractor and refinisher my whole life and have had many crazy mishaps in my career. Nothing you can do sometimes, shit happens!
Click to expand...

I vote video as well... What he said ...^^^^
 
JoeyInCali said:
I have a hard time imagining the pin breaking in half .
What happened to the tailstock pressure with the live center ?
The cue spun in suspension mode ?
Click to expand...

The was being driven CW from the pin end which should have tightened the screw in to the mandril.. The vibration or dc motor pluses must have made it back off..... the butt bowed and the pin started flexing as it was spinning....there was tremendous pressure.....
. that is what I think happened.......... it has backed off before but I always caught it in time.....

it broke a SS pin .... I never thought that could happen.............

Kim
 
Hi,

When the cat is away the mouse will play.

The mouse here was motor torque and angular momentum that caused a destructive oscillation.

The wind speed that destroyed the Tacoma Narrows bridge was not that strong. It was constant over a period of time as was the wind's vector that set up the oscillation that caused structural failure.

Rick
 
I have 2 spinners that use the same head stock, the same tail stock and the same motors. One will back the screw off and the other one won't. The only thing different is the dove tail bed and the board it is screwed to .............. go figure

Kim
 
I would say that you need to check the alignment between the headstock and the tailstock.

The only way I could see it backing out would be if the side load was twisting around the cue as it turns.

I guess it could be caused by a bad chuck too. Too much runout would cause the same thing.


Royce
 
whammo57 said:
The was being driven CW from the pin end which should have tightened the screw in to the mandril.. The vibration or dc motor pluses must have made it back off..... the butt bowed and the pin started flexing as it was spinning....there was tremendous pressure.....
. that is what I think happened.......... it has backed off before but I always caught it in time.....

it broke a SS pin .... I never thought that could happen.............

Kim
Click to expand...

If it was me, the forearm would have exploded and the shards would have taken out the finished cues hanging from my ceiling.

There is no way anything would have been repairable.
 
RBC said:
I would say that you need to check the alignment between the headstock and the tailstock.

The only way I could see it backing out would be if the side load was twisting around the cue as it turns.

I guess it could be caused by a bad chuck too. Too much runout would cause the same thing.


Royce
Click to expand...

that's an interesting thought.... I will check that out

Kim
 
RBC said:
I would say that you need to check the alignment between the headstock and the tailstock.

The only way I could see it backing out would be if the side load was twisting around the cue as it turns.

I guess it could be caused by a bad chuck too. Too much runout would cause the same thing.


Royce
Click to expand...

Just to get back to you on your idea....

I did find an alignment problem..... my spinner is a 48in taig lathe bed mounted on a 3/4 in piece of plywood.....

I screwed the ends of the plywood down and that allowed the center to bow up.......... and that was the misalignment......... got it all flat now...........

thanks


Kim
 
whammo57 said:
Well the end of the cue started on fire and I had to squirt some water on it to put out the flames.
Click to expand...

Wish I could have been there to see your face when the cue caught on fire :D

glad it all worked out in the end!! :thumbup:
 
JAlan said:
Wish I could have been there to see your face when the cue caught on fire :D

glad it all worked out in the end!! :thumbup:
Click to expand...

I wish I had pictures.......... I did panic just a little......

It is amazing but I repaired it and it looks just like new............ I didn't tell the owner that it was up in flames.............. LOL

Kim
 
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