Replies

1. 
   SgianDubh | Mar 29, 2003 06:37am | #1

   Jeff, dying a part prior to gluing will have no significant effect on glue strength. Dyes change the colour, but they impart no film barrier to the parts being glued.

   Staining with oil based colourants could have an effect. Stains often contain some form of film finishing properties. For example, Minwax products in the US available at Home Desperate, etc., -- the stuff in a yellow can, have a certain amount of mineral spirits and varnish type elements in them. This might-- no, will-- create a something of a barrier that will detract from gluing ability. Slainte.  

   Website    The poster formerly known as Sgian Dubh.

1. 
   jeffn7 | Mar 29, 2003 07:00am | #2

   thanks, that's what I thought, but wanted to ask just in case.

   jeff

1. 
   SgianDubh | Mar 29, 2003 07:19am | #3

   Don't know what you are changing the colour of, Jeff, but I forgot to mention that other colourants have no significant effect on gluing ability. For example, you can change the colour of oak by fuming with ammonia, or you can do something like it with green copperas (Ferrous Sulphate) on maple or oak, and neither will hurt glue strength that I know of. Both colouring agents change the colour of the wood via a chemical reaction with elements in the wood. Neither-- as far as I know-- create a film polish barrier to glue. Slainte.Website    The poster formerly known as Sgian Dubh.

2. 
   alank11 | Mar 30, 2003 04:12pm | #4

   The only concern Iwould have is the possible squeeze-out of glue to exposed, stained areas.  Areas that you will want to apply a finish to later.  When you try to remove the glue to apply the finish, you may damage the stained area which could then be hard to match.  But perhaps you more careful at gluing than Iam : )

   Good luck

   Alan

3. 
   TJW | Mar 30, 2003 10:41pm | #5

   Another thing to watch out for is bleeding of water-based dye into the glue.  You can end up with a concentrated color around the joints that may be difficult to remove.

4. 
   gmiller | Mar 31, 2003 01:22am | #6

   I just finished building a multi-component wall unit and faced the same problem. I decided to only pre-stain the floating door panels and the inside edges of the rails and stiles - masking where necesary. However, I used a glazing technique rather than stain or dye because I was concerned about blotchiness.

5. 
   jeffn7 | Mar 31, 2003 07:26pm | #7

   thanks to everyone, I went ahead and stained my parts. Here's a note from Jeff Jewitt on my question:

   "Dye applied with no binder (i.e in water or alcohol) should not affect any glue surfaces. Since I typically dye and apply a coat or two of finish (pre-finishing), I do tape off the surfaces. "

   as for glue spots, I started using hide glue and have not had a problem with this.