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Hinges one more time please

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Dietrich Trenner

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In another thread Glenn Bradley pointed to a thread that showed his method of hinge installation which was very well done. Can you elaborate on your use of a router and table to make the mortises? I'm particularly concerned about tear-out. Specifically I would like to know what type of bit you used and did you use a backer board.

Thank you, DKT
 
Hi Dietrich, I definitely used a backer board whenever I could. The cuts made from the outside surface that end on the inside precluded the use of a backer. Slow forward motion and a nice sharp up cut spiral made a very clean cut; even in the shedua which is quite fibrous.

I just did a couple more boxes this same way and believe I took some more pics of the process. I will be home tomorrow and will check and post what I find. In the mean time I can tell you my hinges were just over 3/4" wide and 1/8" high when closed. I cut the mortise just shy of 1/16" in depth so that there would be a slight gap when the lid was closed to make room for the little felt bumpers I like to use.

The bit is a 3/8" solid carbide (Whiteside) upcut spiral so I make two passes side by side. The mortise must be a little over 3/4" so there is a small rib left between the cuts that I take out with a butt chisel.

The mortises are actually more like slots and this makes them easier to cut but more prone to boo-boo's at the exit point. Using backer boards and a nice sharp cutter turning very fast gives me the best result. I'll try to post some better pics ASAP.
 
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My apologies. I failed miserably in the pic department on this technique. I could have sworn I took pics of this but cannot find them and must concede that they either only exist in my mind or I deleted them accidentally. Both are possible.

I will do better on the pics on the next set which should be coming up soon . . . Only 119 days, 8 hours and 43 minutes till Christmas.
 
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