milling

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hi everyone a QUESTION FOR MILLING, WHEN MILLING FOR NOTCHES DO YOU GO FOR THE EXACT MEASURMENT OR DO YOU LEAVE IT A LITTLE THICK AND THEN FINAL BY HAND TO FIT. THANKS Don
 

NMBROOK

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Now that is an excellent question Don.Personally,for me,it depends what it is.Notches in a keel for the frames,I would aim for exact width of the frame but would leave a little meat for height adjustment.On Saint Philippe's frame mortices I go for exact depth but tweak the length with a sharp Scalpel.I try to minimise how much I allow for adjustment otherwise you can loose the sharp shape produced by the mill

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Nigel
 
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Don
I am an ex tool and dye maker and I have always cut smaller , measured and then cut to size. Measurements in your head even when I was young would suddenly change.
Play it safe cut the notches undersize, double check your measurement and finish cut.
It takes extra time but you are assured that its right.
Dave F
 
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