(LinuxCNC) Building a CNC from scratch. This might surprise you.
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- Опубліковано 2 жов 2024
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Thank you for a truly amazing and enjoyable video! I am currently building a new CNC machine, which will be a 3-in-1 machine: router, plasma cutter and laser engraver/cutter. And yes, also using LinucCNC and a Mesa 7i96S.
Please allow me to make one suggestion. For the X and Y axes, I would recommend to place two tubes on top of each other, to limit deflection of the axes, preferably with some spacers between them every 10 inches or so. Those spacers can be made as 4 inch segments of steel tubes. The resulting axes and gantry would be much more robust, increasing the accuracy of your machine. And since you are a great welder, it would also extend the fun during the build process :) I think that in your current setup, if you would measure the flatness of your router bed, you would find that it is quite concave, as the result of deflection of the axes during the routing process. It may be good enough for your current needs, but I think that achieving much better flatness and overall robustness and accuracy of your machine at a relatively low cost would be a great investment, and make your machine more future proof as well (e.g. if you want to install a bigger/heavier router spindle).
No way you have only 500 vievs i thought you had 100000+ highly underated
wow im impressed great job.
Dobra robota :) na wiosnę też zrobię Plazmę/frezarkę :D
Your garage looks identical to mine even down to the crack on the foundation. The part of the slab to the left of the crack has sunken, tipping the edge 1/2" up. Should I be worried about it?
Really enjoyed the video - awesome build
I will build in kitchen thanks
Super!!!! Podobalo sie bardzo!
How is the flatness on these tubes? And how does the flatness of a tube affect mounting the rails? I have always wanted to build a desktop cnc using square tubes but unfortunately, the tubes have bad quality where i live. So i decided to make a desktop cnc using sheet metal which didn't work very well (Too much vibration with the steel sheet).
I think you could get away with surfacing the tubes with a fly cutter or something similar to get a flat surface on the tube. Tubes are rarely perfectly flat, but in this case it didnt matter that much and any error in elevation or tilt I would just correct with shim stock. Look at the DMC2 desktop cnc mill, its made with all steel tubing thats been bolted together. I dont think you need perfect material in order to build a CNC as long you can adjust with shims or bolts. Mechanical connections are always the safest, welding a cnc frame together accurately is far trickier. Another trick to dampen vibration is just to add more mass. So if you can connect something heavy to your sheet metal frame it could reduce vibrations, but I also wouldnt be taking heavy cuts either. If you dont have access to a mill or surface grinder you can always attach some sandpaper to a sheet of glass and carefully grind a flat surface on the tubing. I dont think the problem is the bad tubing, because if you know how to check the straightness and flatness of the tubing you can always correct for it.
@@SciCynicalInventing Thank you so much for this detailed answer. I think i will design a new frame using square tubing similar to the DMC. I am also considering stainless steel square tubing, they are way more flatter and nicer but more expensive. Stainless is also harder to drill and tap. By the way i enjoyed the video and learned a lot from it so thanks.