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  #1  
Old 11-10-2004, 06:45 PM
eltice eltice is offline
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Epoxy Question

I tried a search for this and did not see a post which answered my question (It was probably there, but if it was, I missed it....my wife always yells at me for that).

I am new to the hobby/obsession and have made a few knives so far and this is a first.

I was just finishing a SG4 Trailing Point when I noticed that the scales had started to "pull away" from the tang. I used cocobolo & mosaic pins (rather than the screw/pins provided). Before I epoxied the scales, I first wiped the blade and the scales with mineral spirits to remove any oils and made sure they were completely dry (blew them with compressed air).

Any thoughts or suggestions on how or why this may have happened so that I can hopefully avoid this in the future? The mix was good (I think), as it is still adhered to the scales, but the epoxy did not adhere to the steel. :confused: Could this have happened when I was sanding the steel and scales (overheated the metal)?

Any help or guidance is much appreciated!

Thanks,
Eric
  #2  
Old 11-10-2004, 08:16 PM
Jamey Saunders's Avatar
Jamey Saunders Jamey Saunders is offline
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It could be that you overheated the metal. Heat will cause epoxy to soften. It could also be that you didn't rough up the tang. Epoxy needs some "bite" to stick. It doesn't stick well to smooth surfaces.

Do either of those things sound possible?


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  #3  
Old 11-10-2004, 08:35 PM
eltice eltice is offline
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Jamey,

It didn't dawn on me to rough'n up the tang anymore than it was, I just figured that the pins would have added enough to bite onto. Next time I will "rough" sand the tang and possibly add a few gouges or grooves for additional bite.

Also, I will pay close attention to heat build up.

Thanks!
  #4  
Old 11-10-2004, 09:08 PM
jager jager is offline
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There are a couple of things I have done that might help. I actually take a file and score the tang. This gives the added teeth for the expoxy to bite into. Also, I have had mineral spirits leave a slight residue. It doesn't seem to clean the metal as thoroughly as I would like. I find that by using acetone, I get a cleaner surface.
  #5  
Old 11-11-2004, 06:51 AM
eltice eltice is offline
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jager,

Thanks, I give acetone a try rather than min. spirits.

Eric
 

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