re: Unifence mounted pushblock

I was thinking something that would almost be captured over the top of the extrusion, that way in the event of a catastrophe, the push block would be thrown backward and allowed to loose speed as it slid. This would be more preferable to having the whole thing thrown at my face. Another thought would be to have a replaceable section that would almost certainly see blade contact every once in a while, maybe something dovetailed into the bottom.