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Old 05-10-2018, 01:18 PM   #1 (permalink)
 
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Default Best tube adhesive?

Just wondering what folks are using. When using medium CA to glue tubes, too often when I get a catch I notice that the blank doesn't seem to be adhered well to the tube. Is 2 part epoxy or Gorilla glue a better choice?
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Old 05-10-2018, 01:24 PM   #2 (permalink)
 
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I have had great success with 2 part epoxy.
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Old 05-10-2018, 01:30 PM   #3 (permalink)
 
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This is a pretty broad question. The glue I use depends on the material being used. I would guess most glue would work for most applications but some glues would be way better than others. When I'm using wood I'll use CA because I want to keep the wood dry. Med CA is the thickness I use the most. I'll use Gorilla Glue for Acrylic and Deer Antler because I like the idea of the glue expanding to make sure there aren't any air pockets. I'll use the two part epoxy glue when I'm concerned about voids in between the wood and tube but want to keep everything dry.
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Old 05-10-2018, 01:41 PM   #4 (permalink)
 
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Hands down gorilla and or twp part epoxy.
Keep to make a good glue joint is at least 24 hours cure time. I have not had one failure sense going to 24 hours.
Had experienced failures with CA glue both thin and Med.

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Old 05-10-2018, 01:42 PM   #5 (permalink)
 
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Quote:
Originally Posted by ramaroodle View Post
Just wondering what folks are using. When using medium CA to glue tubes, too often when I get a catch I notice that the blank doesn't seem to be adhered well to the tube. Is 2 part epoxy or Gorilla glue a better choice?
Two reasons the tube is not adhered adequately.

1. Drilled hole too big and 2. Not enough glue in the blank.

The tube should have little side to side movement.

You should use Play doh or something similar to plug the end of the tube, put some CA in the blank and on the tube and insert tube. This pushes CA all the way down the tube coating it.
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Old 05-10-2018, 02:05 PM   #6 (permalink)
 
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Years ago, when my friend Max was asked at the Camera Club which camera was the best, his answer was always 'the plaid model'. His point was that it didn't matter which you got; what really mattered was how well you used it. Same principle applies here.

Seriously, everyone has an opinion here - what works for you doesn't work for me, and vice versa.

I generally dislike polyurethane glue because it seems to get all over everything and everyone within a couple of miles of where it's being used, but it seems to work well for me in this application.

By the way, are you abrading the tubes before applying adhesive? That seems to be a key factor in getting glue to adhere to tubes.
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Old 05-10-2018, 02:46 PM   #7 (permalink)
 
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Try sanding the tube with 220grit and then wipe with alcohol to remove oils. Try not to touch the tube without a glove on, as oils from the fingers will get on the tube.
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Old 05-10-2018, 02:46 PM   #8 (permalink)
 
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+1 for 2 part epoxy.
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Old 05-10-2018, 05:18 PM   #9 (permalink)
 
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Thanks all.
Can't really do much about hole size. i.e. 7mm tube & drill bit.
Tubes abraded with 150 sand paper.
I use plumbers putty on the tube ends.
I'm leaning towards 2 part 5 min. epoxy and waiting overnight or at least a few hours. (the opposite of CA and turning in 10 mins)
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Old 05-10-2018, 05:59 PM   #10 (permalink)
 
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Default My choice has evolved...

I used to use CA (medium), but I had a couple of cases of the tube getting stuck while I was putting it in. I think it might have been my fault, but it bothered me enough to make a change.

I now use 2 part epoxy all of the time. I went from 5 minute stuff to System III T88, which has (I think) a one hour work time. I bought this because I sometimes do a production run that needs more time. I am concerned that I bought it in too large of a bottle, because the Part B is getting a bit thick. It never has failed, though.

I, like others scuff the tubes with 150 grit sandpaper, and use plumbers putty to minimize the problems with clean up. I generally clean the ends after 1 day, and don't start turning until the following day.
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