Reply To: Draw-bore Efficacy
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Draw bores are very efficient methods for drawing up tenons. into the mortise. Generally they are unnecessary today because we have finely engineered long clamps as a direct result of the development of screw threads. The industry standard was of course nothing to do with the shilling but the eye of the man making that particular mortise and tenon joint at the end of his auger bit. Put the hole too near the shoulder line and you weaken the wood around the mortise, put it too far away and shrinkage will show along the shoulder line.I often see the pin in the middle of the stiles. Was this wrong? The Shakers did this a lot. I think mmuch depends on how well you know wood and in particular how well you know your woo; the wood you have had in stock. Lots to consider.