Hello!
I had looked into this a few years back- I’ll dump the links that I saved:
(Edit: as a new user, it wouldn’t let me dump all of my links..)
https://www.cnczone.com/forums/diy-cnc-router-table-machines/195858-cnc-cad-4.html
https://www.cnczone.com/forums/linuxcnc-formerly-emc2-/107670-cnc-forum.html
Please do post a build thread!
yes.. Tangential knife is possible even in home conditions. just today after a month of torment I managed to create logic, my own gcode maker for creating a path and angle and it works incredibly well… so far tested without load… and it runs on arduino mega GRBL mega 5x.. it was a big torment… but the goal is already on the horizon… now I will research and try how to make a cutting head. I already have some idea in my head, just need to implement it… when it is ready… I will show for inspiration
Hi, can you explain in more detail what you mean because this really reads like AI generated pseudo word stew.
AI is usually a bit more coherent (even when it is wrong), uses complete sentences, uses headers excessively, and seldom uses ellipses (…).
My guess is human, but possibly with English as a second language.
Yes, please.
sorry guys… I don’t know if I should be offended or proud of myself now😅 but I’m not AI. what I wrote really happened and is happening… I thought about it for a long time but yes, it is possible and realistic. I still have a small prototype of a modified laser… so far I can control 4 axes. XYZ and A-tangential. It is controlled via Arduino Mega and regular GRBL Mega 5x firmware… and with a little help from my friends I managed to write a script to create gcode for xyz A… I think it works great… so far I can make gcode from SVG which will be absolutely enough for my needs…
So what is making you write your own g code software???
Please do keep sharing. It will be something a bunch of us will follow along with considerable interest.
What led me to create my own software for creating the Tangential knife path? Simple answer. I haven’t found software that would be easy to use, clear and fully functional, and those that would perhaps meet my expectations are expensive. And as a hobby cnc enthusiast I am not willing to accept professional software for such high prices 
It is a single-purpose tool only for tang knives, but for everything else there are programs easily available. My script is working without problems so far, and I plan to create my own interface for importing svg. It should include setting the xyzA speed. Setting threshold and critical angles and detail resolution as needed + visualization of the path
Aint we all?
Wish I could say that! It just seems that way!!
hello I’m back I’m not AI. I’m continuing with the development of the software for the tangential knife. I already have it basically ready. But I’m trying to tighten it up and raise it to the 6axis level for use in cutting cardboard packaging. That means XYZA Z1 A1. The software have its own GUI environment. Right here in that environment you set the feed rates, safe height, cutting depth, tangent head rotation speed, Z axis feed rate. It already has the SVG import function. from the display of the loaded file. Possibility of simple edits, move, resize, rotate. changing the color of the lines to red or green, depending on what you want to cut and what you want to bend. and finally generate g code. after creating the g code you have the simulation function, where your created gcode is loaded. after starting play, the XYZA simulation will start.. I can successfully test single-head tangential cutting on a modified mini plotter. I will continue to debug the still unfinished version of the double-head version for tangential knife and tangential bending. Everything will be connected and controlled by Arduino Mega and GRBL.. …………no overpriced boards:wink:
Hello, I have finished tangential cutting for grbl. If anyone is interested, you can watch the video and I would be interested in your opinion, thank you. https://www.instagram.com/reel/DVDeAEMjfIx/?igsh=MTVzZnlkMWtwa204eQ==
Do you have something else then Instagram video ? Don’t have an account, and I don’t want it…
Do you have something else then Instagram video ? Don’t have an account, and I don’t want it… Thank you !
I’m slowly putting together an LR4, I’m in the printing phase… Next the table, then the tool !
While printing, I’m working on a tangential oriented knife tool, not just a drag knife. It’s kind of a middle ground between the drag knife and oscillating knife. For my purpose, I think it’s gonna be super fine for cutting cardboard, and other soft thin materials.
It’s really hard to design and stay in the DIY class and available hardware (no machining). I think I’m doing pretty well, I will soon have something to print and test. The knife tool is spring loaded, has a stepper with belt and pulleys for rotation axis (1:3 ratio), an homing switch, it fits in the Makita tool clips, has a trust bearing for axial load, and more…
Hope it will get the job done !
Hey this looks pretty good. I am excited to see updates as you keep progressing.
Nice work, please keep us posted.
Yes please!
Ok it looks good on paper now, mostly down all the tolerances fitting and hardware selection. Hope this would not end in a not usable design ! My main concern is the axial motion, I’ve 3 small linear rods axis in bushings. I made the constrains fit for 2 axis and little looser for the 3rd one, but still… Well I will order hardware and keep you update later !
I have borrowed and remixed the blade holder from https://www.thingiverse.com/thing:2661474.
Im looking forward your build. Would live to build one myself
