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When at the WoodRat open day recently I had a chat with Colin Chandler from Southampton. In the course of conversation Colin explained that he had been having problems with wide boards "bowing" as he cut tails. This occurred as he wasn't able to cut all the tails at one time and he had to return to finish the joints  later. I do not remember if the boards were in softwood but he found it very frustrating and was not happy to waste wood. Whether this happened because of stress changes or changes in humidity, I don't know but he came up with a very determined solution.

He removed the right hand fence and replaced it with an alloy plate. Another two holes were drilled and tapped for extra fixing as can be seen in this photo.

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Four studs were then fixed to this plate so that a second plate with corresponding holes was made up. The work was then sandwiched between the two plates as shown below thus ensuring that the work would remain flat. I assume that when using this system to cut the corresponding pins the plate thickness would have be compensated for with the button position.

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Full marks for determination there Colin. Looks like you are a bit pushed for space though!!


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