To being, I used two pieces I had that were 12'x5'x1' in size and cut them into 5 inch squares.This is a great project also for using up any offcuts left around from other projects. And not everything you glue together has to be the same size.
Now its time to sand each side that will contain glue totally flat. Just a quick rough sand will do. Actaully the coarser the sand paper on the sander is, the better the pieces will stick together, since rough sanding makes for the grains to be all jagged, with lots of air pockets. You can also see the grain of the wood change once sanded, so keep going until the whole surface has evidence of contact from the sander and thus, is flat.
Now I picked up a trick somewhere that if you wet the pieces to be glued, it helps with spreading the glue over the whole surface and also opens up the grain pores, which will end up with a tighter and stronger join. I just ran each piece briefly under the tap on high jet. This also gets rid of any dust particles left over, which makes for a clean well-bonded glue binding.
Before jumping in, I mad sure I have everything ready to go -
- a layer of cardboard was layer over the work area (so you don't glue anything to the tabletop!).
- a sponge in a cup of water.
- at least 2 G clamps (make sure you have clamps big enough for the project!)
You have to work fast at the glue stage. This doesn't matter too much if you aren't gluing too many pieces, but if you are, be aware that the wood glue bonds in about 20 minutes or so. So you want everything glued and in place before bits start setting... If your project is going to be huge, then opt for gluing in stages; glue some parts together, then some other together, then 24 hours later glue these two etc
When you apply and disperse the glue, its amazing how helpful the grain can be when it is wet. Here is a pic of several pieces I glued, stacked up to free up the workbench.
The clamp the whole project between 2 scrap wooden pieces, so as to not damage the piece. And make sure each side is glued really tight. The tighter you can get those clamps clamping, the nicer the end resulting seams will be when you are polishing.
Leave them for at leaf 24 hours.
Then take the clamps off - now time for rough cutting out the shapes!