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Old 07-29-2014, 01:22 PM   #21 (permalink)
 
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There was a large thread about this some time ago and if memory serves the culprit seemed to be the accelorator. For my pens that recently developed cracks, I used the same Stick Fast aerosal accelorator and stick fast medium CA for all.

The accelerator is an older can that I've used before with no problem. The medium CA bottle is new however. I am going to stop using that CA for finish and try a new can of accelerator and and new CA.
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Old 07-29-2014, 03:27 PM   #22 (permalink)
 
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Quote:
Originally Posted by Janster View Post
Quote:
Originally Posted by edstreet View Post
Not this thread again. :(


Get over it already! Everyone is not as SMART as you, I guess? That is why they ask questions! Also, since you must have traveled that road, perhaps you can add something valuable
and something that is useful instead of discontent? Just "perhaps"? And to now address the question... The problem "could" a bit of CA left on the inside of the tube from the glue up process, which narrows the ID and when pressing in the components, it causes the crack? You may try a light scuff w/sandpaper in the tube before pressing the parts together? Or, wipe down the inside of the tube w/debonder to evacuate and CA. Be well...Jan
I have added many things of great value on this topic, repeat times. This is not about being smart or not it's about what you see circled in this image.




That one link ... yields this, of value.

CA finish issues

DEVESTATED! What happened here?

Advice with cracks 5 mths later

CA Help

Hmmm. CA finish looked great, then turned!

CA finish is cracking?

Cracking Acrylics

Messed up finish.

Finishing Troubles

OK. Educate me. What caused this?

Problem with CA finish cracking

Stamp pen, CA cracking

CA funkiness

CA Cracking

CA Glue Failure- Suggestions?
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Old 07-29-2014, 04:18 PM   #23 (permalink)
 
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I have CA peeling, and occasional cracking of wood.

I think the cracking is due to too much pressure during assembly using kits, and i intend to sand the fittings a bit before connecting them in my new batch.

Peeling and cloudiness. I engrave my pens before assembly. After engraving i set the engraving with a spray fixative, but wonder if the engraving is still letter in moisture.

Does anyone seal the end of the wood/brass tubes before assembly, maybe this is a source of my moisture.

Finally a friend says that because it is far too hot here that my air conditioner is putting moisture into my room when i finish? Anyone have any comments on the above.

thanks

Peter
Not likely....Air conditioners are by their nature dehumidifiers not humidifiers...they remove water from the air - they don't add it.
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Old 07-29-2014, 04:33 PM   #24 (permalink)
 
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I'm sorry I can't show any pictures because they were very slight and my camera wouldn't have really shown them. I also just gave the pen to a friend, They didn't notice them... They loved the pen.
I have tried the CA on a few more pens and it didn't crack... but one time it did get stuck to my glove and top of my index finger! it also gave me a small burn, NOW I'm very careful and I also open the window over the Lathe... the fumes have to be very bad even with a face mask. But it is a lot of fun! I'm hoping to at least pay for this part of my woodworking hobby by selling some pens. I just need to see where best to sell them and at what price.
...
Ric...don't take any sarcastic natured replies as the norm from this site. I remember asking the same questions as you and not really understanding the search feature because we all aren't tenured like some of the venerable sages here...if everyone knew all the answers I'm guessing this site would no longer exist...so do what the smarter people that aren't perfect here do and accept the people that are willing to help and ignore the self-righteous morons that can't remember they turned their first pen too...
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Old 07-29-2014, 05:06 PM   #25 (permalink)
 
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You will have better results if you buy a chuck for the headstock, and a drill chuck for your tailstock to drill your blanks. As for pressing pens together, don't waste money on a pen press, get one of these. I don't even use my press anymore.
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Old 08-21-2014, 05:39 PM   #26 (permalink)
 
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Well, here we go again.

I replaced my CA and accelerator. I used thin instead of medium. I tried it with and without accelerator. I tried it with and without BLO. I STILL have pens cracking. All across the board, and different applications. I just went out for the FOURTH time to try and apply a decal for a pen and the ends of the JD oak had cracking. Another pen, from the exact same blank has no cracking.

I literally just turned the lathe off and came in for the night. I'm so frustrated and at a loss for solutions I don't know where to start.

At this point it feels like an exercise in futility to sand everything down yet again to start over.

The material was stickfast CA and accelerator. I would love to not use accelerator but without it dry times per coat for me are 3-4 minutes on average. I've never been able to find anything that cured faster.

Quote:
Originally Posted by eliasbboy View Post
There was a large thread about this some time ago and if memory serves the culprit seemed to be the accelerator. For my pens that recently developed cracks, I used the same Stick Fast aerosol accelerator and stick fast medium CA for all.

The accelerator is an older can that I've used before with no problem. The medium CA bottle is new however. I am going to stop using that CA for finish and try a new can of accelerator and and new CA.
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Old 08-21-2014, 08:43 PM   #27 (permalink)
 
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Why not just wait the 4 minutes and see if that helps? Even at 4 minutes/coat, that is less than an hour total for 10+ coats. I can always find something to keep me busy while I wait, either drilling blanks or putting some pens together, backpainting acrylics, etc. We turners are really spoiled. If you were finishing a piece of furniture a great finish could take days. We grumble if our CA takes more than a minute to dry.

Another thought is if it is taking so long to dry, use thinner coats. IMO the secret to a CA finish is basically like any other wood finish. Thin coats and let it dry completely between coats.

My only other suggestion would be to ditch the stik-fast brand. It is the only brand that ever gave me any problems (though it was not cracking). I know a lot of people use it without any issues, but that was not my experience. I have had good luck with Titebond medium from Woodcraft, and now EZ Bond medium from exotic blanks (switched because it was much cheaper).
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Old 08-22-2014, 10:54 AM   #28 (permalink)
 
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Thanks for the advice. I will definitely try that. I was always worried that by waiting I would allow particles to get stuck, but like you say it's definitely cheaper and faster than redoing a pen multiple times. It's just so annoying to not know the exact WHY it's happening.



Quote:
Originally Posted by kovalcik View Post
Why not just wait the 4 minutes and see if that helps? Even at 4 minutes/coat, that is less than an hour total for 10+ coats. I can always find something to keep me busy while I wait, either drilling blanks or putting some pens together, backpainting acrylics, etc. We turners are really spoiled. If you were finishing a piece of furniture a great finish could take days. We grumble if our CA takes more than a minute to dry.

Another thought is if it is taking so long to dry, use thinner coats. IMO the secret to a CA finish is basically like any other wood finish. Thin coats and let it dry completely between coats.

My only other suggestion would be to ditch the stik-fast brand. It is the only brand that ever gave me any problems (though it was not cracking). I know a lot of people use it without any issues, but that was not my experience. I have had good luck with Titebond medium from Woodcraft, and now EZ Bond medium from exotic blanks (switched because it was much cheaper).
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Old 08-22-2014, 02:27 PM   #29 (permalink)
 
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Swamp coolers add humidity.....
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Old 08-22-2014, 05:26 PM   #30 (permalink)
 
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I just came in from finishing a half dozen pens and I am fairly confident I know my problem. Sorta.

Maybe.

I hope.

I think I was not letting the CA dry long enough as mentioned before. I always wait and test with the back of my finger to see if it's dry. Today I checked first with the back of my finger, then checked with the front side, and many times what felt dry to one was not to the other.

Also, I have NEVER had any of the cracking show up on an inlay pen. I wonder if the various joints give the wood some give that is not causing the cracking?
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