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View plang's profile

Gluing over stain

by plang
posted 01-28-2018 07:20 PM


6 replies so far

View Luthierman's profile

Luthierman

222 posts in 1473 days


#1 posted 01-28-2018 08:46 PM

Regular PVA wood glues wont have a very good bond. I would go to a CA or epoxy at that point.

-- Jesse, West Lafayette, Indiana

View HorizontalMike's profile

HorizontalMike

7788 posts in 3300 days


#2 posted 01-28-2018 08:55 PM

+10 epoxy.

CA would work as well, however IMO, CA is rather unforgiving and when things go south they really go south in a hurry. I vote for the epoxy. With epoxy you have some open time for corrections, cleanup, etc.

-- HorizontalMike -- "Woodpeckers understand..."

View Carloz's profile

Carloz

1147 posts in 978 days


#3 posted 01-28-2018 09:21 PM

Is this water based dye or oil base stain ?
In the first case regular PVA glue would work well enough to keep the decoration.
In the second case you can go on to finishing the piece with oil based polyurethane without the decoration. Apply a thick coat and stick your decoration directly to the finish. After it cures proceed with following coats, over the decoration and the remaining surface of the main piece.
Epoxy is a poor choice for gluing to oiled surfaces.

View LesB's profile

LesB

2089 posts in 3829 days


#4 posted 01-28-2018 10:47 PM

I would use a urethane glue, aka, Gorilla glue the glue affect is similar to epoxy with less mess. Be sure to clamp or put pressure on the parts as urethane glue expands as it cures. Put a thin coat of the glue on one part and wipe the other side of the glue joint with a damp towel just before you put them together; the glue cures with water. if there is any squeeze out leave it until it hardens (it swells up like foam) then it can scrape right off. Don’t get this stuff on your fingers it will turn them black if you don’t clean it off right away.

-- Les B, Oregon

View Sark's profile

Sark

97 posts in 746 days


#5 posted 01-29-2018 12:57 AM

Cyanoacrylate glue is perfect for putting on trim, such as your scrollwork, provided you can position accurately with 5 to 10 seconds. Have done this thousands of times. If your scroll work is larger, and you need more time, then I would sand ever so slightly where the scrollwork is going. With a bit of sanding, almost any glue will work. Urethane glues are very sticky and will definitely work, but they will foam so the trim will move unless held firmly in place. And cleanup can be a problem.

View AxkMan's profile

AxkMan

65 posts in 512 days


#6 posted 01-29-2018 03:12 AM

My experience with some glues and stains is that they do not stick well. The bond is never secure. Normally, you will want to sand out the stain as much as possible. But in your case, sanding will be time consuming because you want to sand where the edges of the scroll work will be placed. That’s normal wood glues, but hot glues might help…

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