Coded Finger Joints

Surely not a novelty and perhaps it exists in Compas/Ngon or Biber but it was fun to make and very simple to use with Rhino Polyhedra and it allows me to test my CO2 and after Fiber Laser.

Thanks @dale for this wonderful tool. All polyhedron I tested has curves that are CCW :+1:

The main idea is to generate Finger Joints that are made using a Laser Cutter.

I made 3 types of Finger Joints, regular ones, Two/Three Joints per edge and one that is a Binary code that can be unique on each edge. Unique if read from left to right or right to left. It means if there is enough bits, you mustn’t make an error when making it.

I made this 15 cm polyhedron from 1.7 mm plywood. It uses 500 x 400 mm sheet.

The Laser cutted (not good I still learn to use my machine), and not glued. The trick of Unique code per edge works really, I didn’t have to make adjustments.

3 types of Joints

Regular, Two/Three fingers, Bits coded

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Perfection is not yet here. At the moment Corners are not treated perfectly. Sometimes filled too much in concave region or missing material in convex regions.

Compass Ngon Biber tools are more professional for wood joinery.

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But it is useful, I used my laser to make boxes for my workshop. Assembly is good. Still some glue, sanding then adding some French cleat and it will go on the wall of my workshop

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Man, that is so cool.
I myself have been working on some finger joint gh script, I am in some way relieved that all the work has been done for me already, thank you

What kinda laser is that?

There is already better free tool like Ngon and Compas wood. They are more complex and can generate 3d (CNC) cuts, mine just use for 2D (laser).
https://www.food4rhino.com/en/app/ngon

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It is a Gweike Laser M3/M2 series

I choose the M3 pro because of the size of my garage, but M3 ultra is a better choice if you have place. I also took the compressor.
Wonderful machine that has a 80 W laser CO2 and 1200 W fiber laser. So far I love cutting Stainless steel, far more easy and clean than aluminum.
For the plywood I use here it is 9.5 mm thickness with 10 mm/s velocity of cut and generate tons of fume and flames.
I didn’t begin to weld metal but it is also very good but require many protections that I haven’t yet.

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I myself am I big user of lasers so it’s perfect, I believe it would be useful for my incoming diploma project

fun fact: i met the guy two developed that plug-in and plan to do my diploma work in the same laboratory

Impressive multifaceted machine! Are using it to manufacture something professionally or as a hobby machine?

Between the 2. I will try now to sell some pieces. I am now doing a second one

All pieces cut deburred and sanded. I begin to paint and will rivet in 1 or 2 days
I also developped others assembly joints

Plus various others things

Nice! :blue_heart:

I’m not on Facebook anymore.

We discuss a lot on this machine on Facebook, we tried to go on a discourse but there is still little audience there !!!

This machine is used by some famous people like
Heath Satow @heath (using Rhinoceros)

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Sure, sure, Facebook is just not for me any more. You do you.
Now I remember the Nervous System folks showing the Gweike on Instagram.
Any way, I hope you’ll share some photos of the new PatDef table once it’s done.

I’m definitely getting some good use out of my Gweike laser!

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