I glue up these moon gates using nine 1/4 x 4 x 20' long laminations, clamping them off to these 1/2" dowels I've drilled in to the top of the round table jig's wooden edges.
these wood dowels aren't the most stable places to clamp off to, so I was wondering, are there metal sleeves I can inset 3" into the table, then insert the wood or even metal dowels in to the sleeves? These would be a lot more 'fixed' in place then the wood dowels alone.
If there is such a thing, what would these sleeves be called, and where could I get them?