WillAdams
October 3, 2021, 1:10am
1
The Holy Grail of CNC joinery (to my mind at least) is a joint which:
The closest thing at this time is a blind miter fingerjoint:
Well after an afternoon of playing, I have a way to mill blind finger joints without having to do any vertical mounting.
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Hi, just wanted to share my first Nomad project. I wanted to choose something I wouldn’t be able to make normally, and that involved a kind of precise fit, so I totally overengineered a box.
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At first, I was just doing roughing and contour/waterline passes with the flat mill, and had some issues, like the dirty edges and ugly finish on the 45 degree angle cut:
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But after some experimenting with different strategies (contouring on the vertical parts, waterline on the steeper…
(still working on a void free joint idea, but the math and geometry are tough)
Wrote up a bit on this at:
and here is the base file for 1/4" thick stock which is 3.5" wide:
all joints_0_25_x_3_5_sawnlid.c2d (672.6 KB)
6 Likes
Ed.E
October 3, 2021, 2:04pm
2
I’d like to try this in a hexagon shaped box…
WillAdams
October 3, 2021, 2:26pm
3
Yeah, additional angles are something I’d like to look into — but there is an interaction between the V endmill angle and the angle of the joint — a 60 degree endmill would be needed for a hexagonal box — we’ll have to see, may have to wait until I master the math necessary for the other joinery technique I have in mind.
1 Like
WillAdams
October 4, 2021, 2:48am
4
Wrote up how the joinery/parts are adjusted (basically one goes into Node Edit mode and drags):
Next up is exporting G-Code and cutting the file twice.
2 Likes
