Wood glue question

It is my expectation that the glue soaks into the wood to develop the bond. CAN you glue painted items? Yes, but I do not believe that the joint will be as strong. You also have the issue of glue visible on adjacent glued surfaces.

 I have used Titebond for years building cabinets, but, myself  I  wouldn't try it with paint on first. We stain and finish everything after it 's built. There is a product called ROO GLUE that does stick better, but I would still make a sample first.  Bob

Thanks that's what I thought. After I started painting I figured it was probably a mistake and I should have stopped but I didn't. Trying to beat the rain and now I'll have to sand all the edges.

I use Titebond extensively in building structures, but, externally, if there is some on the surface, exposed, it can be shiny, smooth or another texture under paint.  Use sparingly near exposures, and sand.

Joe:

When one glues two painted surfaces the glue joint is to the paint. No matter what glue is use the bond strength between the glue and the paint will be stronger than the bond between the paint and the wood (which is not strong). For a stationary model you might get away with it. For a structure that will take weight like a bridge the structure could fall apart. 

If you have not glued parts together as yet then carefully sand or scrape the paint off the bond joints. If you have already glued the parts together pull on them. The weak joints will separate (paint from wood). Scrape or sand the paint away and reglue.

Joe

Thanks Joe

Its a bridge from River Leaf Models. The only weight will be a Westernhobbycraft street car but I can't replace it later on so I'll sand all the joints.

joe

I have glued wood structures both before and after painting, always using Aileen's (goes on white and dries clear). Never really found a difference and they've held well for years. I do, however, always, glue a brace inside where the walls join, so it's a very well constructed structure. You may not be able to do that on a bridge, so sanding a bit where the pieces will join may be a good idea.