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Cleanup solvent for two-part epoxy

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Forum topic by RogerBean posted 1281 days ago 2499 views 0 times favorited 10 replies Add to Favorites Watch
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RogerBean

1130 posts in 1590 days


1281 days ago

Topic tags/keywords: epoxy glue

I want to epoxy an applique to a surface finished with French polish. I expect to get a small amount of squeeze out. Does anyone know the proper solvent that would clean off the squeeze out with, say, a Q-tip while it’s still fresh? ...without damaging the shellac finish (which is, of course, dissolves in alcohol)
Roger

-- "Everybody makes mistakes. A craftsman always fixes them." (Monty Kennedy, "The Checkering and Carving of Gunstocks", 1952)


10 replies so far

View Sawkerf's profile

Sawkerf

1730 posts in 1705 days


#1 posted 1281 days ago

Use whatever the epoxy container says for cleanup.

-- Adversity doesn't build character...................it reveals it.

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RogerBean

1130 posts in 1590 days


#2 posted 1281 days ago

Sawkerf,
Many thanks. It says “Wash skin thoroughly with soap and water.” I don’t think that’s going to solve my problem. I’ll call Stewart-MacDonald where I bought it tomorrow.
Roger

-- "Everybody makes mistakes. A craftsman always fixes them." (Monty Kennedy, "The Checkering and Carving of Gunstocks", 1952)

View Steven H's profile

Steven H

1114 posts in 1696 days


#3 posted 1281 days ago

methylene chloride

View crank49's profile

crank49

3380 posts in 1607 days


#4 posted 1281 days ago

I have used lacquer thinner to clean up epoxy before it cures. Don’t know what it would do to shellac though. You sure don’t want to use any kind of alcohol.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View nailbanger2's profile

nailbanger2

960 posts in 1780 days


#5 posted 1281 days ago

xylene/xylol, also not sure what it would do to shellac.

-- Wish I were Norm's Nephew

View shipwright's profile

shipwright

4942 posts in 1434 days


#6 posted 1280 days ago

Tough one Roger. Xylene is the answer but it’s not nice stuff. I always try to get all the excess cleaned up with chisel shaped “clean-up sticks” often custom sanded to shape for the job. I am, however, dealing with larger projects I think. Not only would your shellac be in jeopardy but the xylene would likely get into the joint as well. If I had to do what you’re suggesting I think I would use the epoxy very sparingly and try to avoid the need to clean up at all.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/

View Loren's profile

Loren

7463 posts in 2284 days


#7 posted 1280 days ago

Put tape on the work, trace the applique, and cut out the middle with
an X-acto knife. Then the excess epoxy gets on the tape, not the shellac.

Trying to dissolve epoxy over shellac is asking for trouble. Shellac is
not very resistant to solvents in general.

-- http://lawoodworking.com

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RogerBean

1130 posts in 1590 days


#8 posted 1280 days ago

Thanks for the help everybody. I was hoping there was an easy answer. Sometimes there isn’t.
Shipwright: Probably not getting any squeeze-out is the best answer. Or, possibly just use a different glue. Perhaps hide glue, or even titebond would be fine, particularly if I rough up the surface underneath a little. Then clean up with water. I will ponder it.
Loren: I hear you. Tape is a good alternative.
Roger

-- "Everybody makes mistakes. A craftsman always fixes them." (Monty Kennedy, "The Checkering and Carving of Gunstocks", 1952)

View Ian Hawthorne's profile

Ian Hawthorne

291 posts in 1285 days


#9 posted 1280 days ago

Hi Roger

I have used epoxy over French polish to attach an escutcheon and this was my approach.

I first layed down the escutcheon and roughtly went around the edge with low tack masking tape – removed the escutcheon and inside the masking tape area I removed the shellac in this area leaving about 1.5mm border with a scalpe (epoxy does not take well to shellac). I then make some scores these act for good adhesion and also a trap for excess epoxy – then apply the epoxy to the middle area and apply your piece to be glued – any squeeze out can be removed when near dry as it will not take to the shellac well. For the record I use 5 minute z-poxy

cheers
Ian

-- Coming soon the new improved Neat hinge! http://hawthornecrafts.com/our-blog/

View RogerBean's profile (online now)

RogerBean

1130 posts in 1590 days


#10 posted 1279 days ago

BEST ANSWER:
I contacted Stewart-MacDonald (supplier of the two part epoxy glue I use) and posed this question. Their response is that they would not use epoxy for this application. The issues is comparable to the installation of a bridge on a guitar (i.e. the guitar is finished first, then the bridge is installed after). Locate and mark out the bridge position, then scrape off the underlying finish, then attach with hot hide glue. In the case of the guitar, this approach also makes the bridge removable for repair should this ever be necessary.

Ian’s method would also work. Loren’s approach also.

SM also confirms that StevenL is right on the money that the solvent is methylene chloride, but that’s it pretty nasty stuff that should probably be kept well away from a finished surface.

So that’s the answer. ...and hide glue is the method I will be using.

Best, Roger

-- "Everybody makes mistakes. A craftsman always fixes them." (Monty Kennedy, "The Checkering and Carving of Gunstocks", 1952)

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