CA Glue Application: Sizing End Grain Joints for a Better Bond
What is Sizing?
To "size" a joint is to spread a thin, preliminary coat of thin glue to a surface. The Thin CA gets soaked into the end grain, and after a minute or so you'll notice that the glue has plugged(closed) the open grains. You can now apply a coat of a Thicker CA glue which will now sit on the surface and not get sucked in - thanks to the now "closed" grain.
Pro Tip - end grain to end grain joints work well for low stress/impact joints like picture frames and small boxes. Where a stronger bond is desired, you should consider bonding the end-grain to long-grain.
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