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25th February 2017, 07:02 AM #1Senior Member
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25th February 2017 07:02 AM # ADSGoogle Adsense Advertisement
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25th February 2017, 07:28 AM #2
I would try a Cove Router bit
cove-router-bit.jpg
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25th February 2017, 08:36 AM #3Senior Member
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Do you think the legs have been made then routed or routed first then joined?
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25th February 2017, 09:45 AM #4GOLD MEMBER
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I would make the square mitered frame first. Then I would use a chamfer bit in a router, something along the lines of Carbitool "T 8110 B 1/2". Chamfering the first edge is easy because the other edge is still square. But routing the second edge will require the bearing guide to run along the now chamfered first edge which will create a slightly deeper cut. I use layers of masking tape to temporarily build up the first edge again so the bearing guide runs along at the same depth.
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25th February 2017, 09:48 AM #5
I'd say use a chamfer bit with an angle much less than 45 degrees and bearing at the top, e.g.
Freud 40-098 1 Inch Diameter 15 Degree Chamfer Router Bit 1/2 Inch Shank
This would allow the chamfer to be added after assembly on a router table. The photo you put up is an interesting effect - haven't seen that done before.
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25th February 2017, 09:52 AM #6
Great minds, eh Kuffy.....
Those Carbitool bits you suggest would likely be the easiest to get hold of though.
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25th February 2017, 10:00 AM #7
In order to route the second face, I'd just rip a thin strip on the tablesaw at the same angle as the chamfer bit, and stick it to the already routed face with DS tape to bring it up to flat again. This strip should be run right into the corners of the frame, and the bearing can run along this for the second cut.
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25th February 2017, 10:02 AM #8
Speaking of DS tape, if you ever see any in Aldi (it appear from time to time) grab 3 or 4 rolls at cheapie prices. Its 50mm wide with a brown backing paper. Their stuff sticks like excrement to the proverbial.....
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25th February 2017, 10:12 AM #9GOLD MEMBER
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After the legs were made of square timber another box was made to fit on the outside of the leg. This box is positioned to offer a lip to a copy ring on a router. After one side is done you flip the leg and do the other side.
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25th February 2017, 10:58 AM #10Senior Member
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How would one achieve the inside angle of these legs?
Thanks for the replies, I thought chamfer bit originally but how would you get the rounded corner? I'm thinking the cove bit might be more like
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25th February 2017, 12:19 PM #11
Nah, chamfer type bit with bearing. This leaves a tapered semicircular form at the end of a stopped pass. As you route each segment of the assembled leg, you come to the corner and change direction 90deg. The intersection creates a stopped end to the first segment and a stopped start to the next segment, resulting in the tapered rounded corner.
I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.
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