Creating First CNC Plasma G-Code Using Fusion360 With a Floating Head

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Published 2022-02-21
Link to CAD Models and Plans: bit.ly/ToshDavisCNCFiles
My website to buy some of the custom metal parts: toshdavis.com/products/cnc-plasma-build-plans
I've started to sell some of the parts to make the build easier for you.

Check out my playlist for the complete build below. In this video, I go over Fusion 360 and how to use it to generate your G-Code. I also go into detail about how to use Fusion 360 with a floating head. Some back story this is my 3rd build of a CNC plasma table. The first build you see in this video, while the second one I made was for a friend, featured in the THC video on my channel. This design is based on the design I designed for my friend. Hope this video helps.

Fusion 360 website: www.autodesk.com/products/fusion-360/personal
Fusion 360 post-processor website: cam.autodesk.com/hsmposts

If you are looking at buying the full version of Fusion 360 use this link, it is a referral link and you get 20% off the full version: aklam.io/5NCtQv

How to build a CNC plasma table:    • How to build a CNC Plasma Cutter Tabl...  

00:00 Intro
00:16 Downloading Fusion 360
01:30 Exporting files from SolidWorks
02:03 Importing file into Fusion 360
03:00 Basics of Fusion 360
03:51 Creating toolpath
11:54 Generating G-code, editing post-processor to work with a floating head
22:14 Finding your probe offset
23:37 Homing CNC
24:10 Zeroing the part on the sheet
25:34 Cutting

Parts List:
HG20 20mm Linear Rail Guide Actuator CNC 1500mm*: www.ebay.com/itm/292600713239
HG20 20mm Linear Rail Guide Actuator CNC 750mm*: www.ebay.com/itm/292600713239
3PCS Nema 23 Stepper Motor: amzn.to/3naoHLC
Nema 23 Stepper Motor: amzn.to/3r5Kc14
SainSmart CNC Micro Stepping Motor Driver**: amzn.to/3FfKdEJ amzn.to/31H6jCD
DC 24V 15A Power Supply: amzn.to/3FbyfvO
R55 Plastic Open Type Cable Wire: amzn.to/3GrjGWN
MR12 12mm Linear Rail Guide 100mm: amzn.to/3HN50Bf
8mm to 10mm Shaft Coupling: amzn.to/3r5Cbth
400mm 8mm Lead Screw ACME: amzn.to/3n9N10c
4 Pack Caster Wheels 4 inch: amzn.to/3q9Ja5d
5 axis CNC Breakout Board: amzn.to/3JTyLCu
12 Pack of Micro Limit Switches: amzn.to/3GfcXiy
Metal Gear Rack -20 Pitch 6ft (5174T21): www.mcmaster.com/catalog/5174T21
Metal Gear 20 Pitch 15 Teeth (5172T11): www.mcmaster.com/catalog/5172T11
Compression Spring 2" Long 0.875" OD, 0.635" ID (9657K03) Pack of 6: www.mcmaster.com/catalog/9657K403
Zinc-Aluminum M5 x 0.8mm 20mm Thread Pack of 50 (91274A131): www.mcmaster.com/catalog/91274A131
Zinc-Aluminum M5 x 0.8mm 12mm Thread Pack of 50 (91274A127): www.mcmaster.com/catalog/91274A127
Zinc-Aluminum M5 x 0.8mm 16mm Thread Pack of 50 (91274A129):
www.mcmaster.com/catalog/91274A129

Notes:
* These are the linear rails I bought, though because I don't have space in my shop I have to keep my machine outside and these rails have rusted, just keep this in mind
** I know the linked Stepper Motor Driver is unavailable. I just wanted to link the exact one I used. The second link is a driver that looks similar, I just have not used it so can't guarantee anything

All Comments (21)
  • @keithbrown4878
    This is the part of your build that I had the hardest time with. You did a great job with your tutorial. l had struggles with Fusion 360. The Fusion 360 learning curve was very steep for me. I do have My machine up and running. I could not be happier with the end results. I did add Proma THC along with splash rails and a water storage under the table with filters and a pump to refill. Mine sets in the shop and the water evaporation raises the humidity. I don't use it every day. It made sense to me not dragging a hose out refill. Thank You again for your excellent build video.
  • @johngaleano1291
    Thank you so much for this video! you answered so many questions I had that no one ever answers in their videos.
  • @3dmakerzone75
    Great informative video. I will be using Fusion 360 for both CAD/CAM but have never used it for plasma. Now I know what to look for in the post processor. Thanks!!
  • @netltube
    Great vids, have been really enjoying your build series, making me seriously consider your plans as a next level upgrade to a smaller table I just finished. Hope you'll continue making more vids!
  • @mikevdwerf
    Very nice and informative, cheers. Keep up thr good work
  • good video with many info ... good plasma fusion explanation ... i plan to use fusion in my shop ...
  • Excellent video. Great detailed explanation. 29:12 Extremely helpful. Thanks so much for posting.
  • @JeremyAtchley
    Thank you for the video; it was what I needed to get things rolling for me. I have been retrofitting a very old Vicon 6' x 24' plasma table. I have 20+ years of CAD experience and have always wanted to do this as a hobby. I will upload a video of the dinosaur on my other channel (I accidentally commented with it but deleted it, I do not pay a lot of attention to it yet on replies) once I finish setting up the BuildBotics controller.
  • That was very good and helped me alot. I'm trying to learn the Mach3 ropes and how it interacts with my table. I figured if I could make the g-code work with a marker to draw out a small test project. I should be able to then replace the pen with my plasma cutter. Mach3 is way different from my CNC Router controller but most of the steps are the same in fusion 360 to get the g-code.. Then once I add the plasma cutter and get the probe height working with that. I start to figure out the THC.. Crawl, Walk, Run!
  • Great video! Though I believe I will have to watch this a couple of times more🧐 All the parts will soon arrive, Im so excited to get started😛 One concern I do have, Im working with millimeter and not inch..🤔
  • Nice job on the build. Now that you've finished the entire project, could you do a wrap up video to cover what worked well for you and what you would do differently if you did it again. I think this would be the most valuable video for those of us that will be building one. Again, thanks!
  • @joshuacaylor881
    Are there any nuances or differences in the initial settings for floating z setup if I’m using fusion360 and post-processing in open builds? I just finished my first table and it’s down to these settings before coming alive.
  • @tpace
    tosh I've followed your cmc plasmas table build very closely and build one using your plans almost to the tee. I did use open builds black box as I'm very new to this and feared the electronics and computers more than anything. It's up and running cutting out trial tabs etc. much thanks for all your help. I am struggling with significant bevel (20-30 degrees and parallel in y negative and y positive travel) on my cuts however, especially on the y axis. both side of the the tab bevel the same direction. the x axis cuts are perfect in positive x travel, and beveled in negative x axis travel. I've messed around with torch alignment, cutting heath and speed, but I'm really stretching my head. any suggestions?