Before I through some of the scrap pieces of cumaru lumber into the trash, I took out my biscuit cutter and TB3 glue. I know its not the best lumber to glue, but I glued it up last night, let it set overnight, then this morning when having coffee with my wife, around 7:05 am, I lifted the barbeque onto the joint, put some lumber on top of that, and a couple of jugs of carwash on that, just to see if the joints would hold. I hit the joint with a rubber mallet on the table a few whacks, then pulled it with my hands up at my chest, pulled on each end, and I only managed to get one off, I could not pull the other joint apart.
Because biscuit joints are easy to mark out and quick to cut, using one almost seems like cheating. The safest way to cut biscuit slots is with a biscuit joiner. The oversized slot lets the biscuit move slightly, enabling you to tweak parts into perfect alignment.
how much weight can a biscuit joint hold Related Question:
What is the strength of a biscuit joint?
When done correctly, a biscuit joint is at least as strong as a similar size mortise and tenon joint, and decidedly stronger than a dowel joint.”
What are the disadvantages of a biscuit joint?
Biscuit joints do not stand up well against other joinery methods. We won’t spend any time comparing with mortise and tenon joints because all other joinery methods pale in comparison when measuring strength. But, as an example, the use of dowels as opposed to biscuits is a step up in strength.
How strong is a #20 biscuit?
Biscuits don’t really have much to offer in the way of strength. Here’s why: – Biscuits slots can be a little tight or a little loose, depending on your machine and how steady your hand is. – The biscuit doesn’t penetrate very far into the joining workpieces: a #20 biscuit will penetrate less than 1/2″.