CA job is lousy! - International Association of Penturners
     International Association of Penturners
Pens for Service Members
 
Support The IAP

Go Back   International Association of Penturners > Community Forums > Finishing
  Forgot Password
Register FAQ Members List Search Today's Posts Mark Forums Read
Finishing It ain't a pen till it's FINISHED!


Logged on members can hide ads!

Welcome to penturners.org!

You've found the home of The International Association of Penturners. You are currently viewing our site as a guest, which gives you limited access to view discussions, photos, and library articles.

Consider joining our community today. You'll have full access to all of our content, be able to enter our contests, find local chapters near you, and post your questions and share your experience with our members all over the world.

Membership is completely free!!

If you have any problems with the registration process or your account login, please contact us.

Reply
 
LinkBack Thread Tools Display Modes
Old 09-20-2017, 03:08 PM   #1 (permalink)
 
Woodchipper's Avatar
 
Join Date: Mar 2017
Location: Cleveland, TN
Posts: 1,053
Photos: 1

Default CA job is lousy!

I have some pens for troops. I noticed upon inspection that some of the CA finishes are really bad. I had applied it while the lathe was slowly turning. The CA is rough and has spirals in it. I found a magazine article that said to apply the finish of any kind with the lathe off, applying with the grain of the blank and turn the lathe by hand. These Slimline pens are completely assembled. Any suggestions as to reworking the finish to smooth it out? Thanks.
__________________
One good turn deserves another.
Likes: (2)
Woodchipper is offline   Reply With Quote Top
Old 09-20-2017, 03:31 PM   #2 (permalink)
 
Join Date: Mar 2012
Location: Waxhaw, NC
Posts: 236
Photos: 0

Default

Gotta sand it down.. If you have spirals, you're probably trying to put it on too thick.
Likes: (2)
mckenziedrums is offline   Reply With Quote Top
Old 09-20-2017, 03:37 PM   #3 (permalink)
 
JimB's Avatar
 
Join Date: Mar 2008
Location: West Henrietta, NY, USA.
Posts: 4,066
Photos: 11

Default

CA is applied with the lathe running. You don't give any information about your process so it is difficult to say what what wrong. If it is not smooth and has swirls you need to sand it down. Depending on how bad it is it may need just a light sanding to get rid of the problem or you may need to sand it off and start again. Did you do any sanding after you applied the CA? Unless you are really good at a CA finish you will need to sand/micro mesh after the CA cures. Then polish if desired.

BTW, you will need to disassemble the pen to fix the finish.
__________________
Jim
West Henrietta, NY
Likes: (2)
JimB is offline   Reply With Quote Top
Advertisement
Old 09-20-2017, 03:45 PM   #4 (permalink)
 
Woodchipper's Avatar
 
Join Date: Mar 2017
Location: Cleveland, TN
Posts: 1,053
Photos: 1

Default

Quote:
BTW, you will need to disassemble the pen to fix the finish.
That will be the challenge. How do I get the twist mechanism out without screwing up anything. Got the set of center punches.
I applied it with the lathe running at the lowest speed. I did use MM. Will see about sanding it and refinishing.
The other method worked out great. BTW, this was from an article by Kurt Hertzog in the AAW magazine.
__________________
One good turn deserves another.
Woodchipper is offline   Reply With Quote Top
Old 09-20-2017, 04:02 PM   #5 (permalink)
 
JimB's Avatar
 
Join Date: Mar 2008
Location: West Henrietta, NY, USA.
Posts: 4,066
Photos: 11

Default

Remove the ink refill then take the largest punch that will fit through the transmission (twist mechanism) and knock out the tip. Use many light taps not one hard hit or you will damage the tip. Then use the largest punch that will fit into the tube from the tip end and knock out the transmission. Again, light taps. I believe there is an article in the library about disassembly.

Kurt is certainly more knowledgeable than I am but unless the article specifically mentioned using CA as a finish I would bet he was talking about 'regular' finishes, not CA.
__________________
Jim
West Henrietta, NY
JimB is offline   Reply With Quote Top
Old 09-20-2017, 04:17 PM   #6 (permalink)
 
JimB's Avatar
 
Join Date: Mar 2008
Location: West Henrietta, NY, USA.
Posts: 4,066
Photos: 11

Default

Kurt has an article on his website specifically about a CA finish. He recommends a speed of 250 to 600 rpm.
__________________
Jim
West Henrietta, NY
JimB is offline   Reply With Quote Top
Old 09-20-2017, 04:25 PM   #7 (permalink)
 
duncsuss's Avatar
 
Join Date: Jun 2012
Location: Wilmington, MA
Posts: 1,199
Photos: 1

Default

Quote:
Originally Posted by JimB View Post
Kurt has an article on his website specifically about a CA finish. He recommends a speed of 250 to 600 rpm.
At a workshop a few years ago, Kurt demonstrated a CA finish with the lathe powered off, wiping lengthwise and turning the spindle by hand (as the OP described.)

I expect he's written about this method too.
__________________
Duncan Suss
website: FruitOfTheLathe | facebook: FruitOfTheLathe

duncsuss is offline   Reply With Quote Top
Old 09-20-2017, 04:55 PM   #8 (permalink)
Member Liaison
 
leehljp's Avatar
 
Join Date: Feb 2005
Location: Tunica, MS,
Posts: 5,472
Photos: 46

Default

One problem with an expert's demonstration is that he is experienced AND skilled in that field. It often takes a long time for the inexperienced to get to that level.

That said, when I started, there were quite a few "methods" for finishing, and while CA was past it's infancy as a finish, there wasn't a consensus as to to what constituted a great CA finish - i.e. a few thin layers of CA without the high polish that most expect and shoot for today. CA can be applied as a "thin" protective layer just fine without turning, but still, without experience that can be tricky at first.

IF, IF a finish method by an expert does not work for you. Use another. That said, few midi - pen lathes went below 500 RPM. CA is applied most of the time running 500RPM and higher. My 2 lathes bottom out at about 600RPM. They work fine and most people will tell you that 600 - 700 RPM is not too fast to apply CA.

As to removing: I put messed up finished blanks back on the lathe and turn it with light touches of a sharp scraper - more often than using acetone. If the CA is thick enough on the messed up blank, I will turn the defects down/off and then apply CA again to smooth everything out.

WARNING: If you don't get all the CA off (either by turning or by acetone) some woods will show a slight color difference, i.e. a light spot - between the areas that were not cleared of CA - and the areas that were. This doesn't happen on all woods but some.
__________________
Hank Lee

Experience is what you get when you don't get what you wanted!
leehljp is offline   Reply With Quote Top
Old 09-20-2017, 05:49 PM   #9 (permalink)
 
JimB's Avatar
 
Join Date: Mar 2008
Location: West Henrietta, NY, USA.
Posts: 4,066
Photos: 11

Default

Quote:
Originally Posted by duncsuss View Post
Quote:
Originally Posted by JimB View Post
Kurt has an article on his website specifically about a CA finish. He recommends a speed of 250 to 600 rpm.
At a workshop a few years ago, Kurt demonstrated a CA finish with the lathe powered off, wiping lengthwise and turning the spindle by hand (as the OP described.)

I expect he's written about this method too.
I should have mentioned the article on his website does say it is a revised method but he doesn't say what the old method was.

Of course we all know there are many methods of applying a CA finish. The best CA finish is the one that works for you and the only way to know what works best for you is to experiment.
__________________
Jim
West Henrietta, NY
JimB is offline   Reply With Quote Top
Old 09-20-2017, 07:01 PM   #10 (permalink)
 
Woodchipper's Avatar
 
Join Date: Mar 2017
Location: Cleveland, TN
Posts: 1,053
Photos: 1

Default

Thanks to all. Will look at the disassembly article in the library.
Edit: Kurt's article was on the February, 2017, issue of American Woodturner magazine.
__________________
One good turn deserves another.

Last edited by Woodchipper; 09-20-2017 at 07:07 PM.
Woodchipper is offline   Reply With Quote Top
Related Content
Logged on members can hide ads
Reply

Bookmarks

Tags
ca glue , slimline , troops

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -5. The time now is 02:45 PM.

Powered by vBulletin® Version 3.7.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0

Content Copyright © 2003-2016 by Penturners.org, LLC; All Rights Reserved
Terms Of Service   Acceptable Use Policy