Hi, I need help getting the Black Box running with Fusion 360. I try all the GRBL post processing cpa in Fusion and some that were mention in this forum (Stroom and Swarfer), but I still can't get the machine to work right. What do I need to change in the script to get it to work with the Black Box? I ran the SIM on all the post processing grbl output and it just doesn't run right or run at all. Peter I am trying to cut out the front hood of my boat and can't get it to work. % (Made in : Autodesk CAM Post Processor) (G Code optimized for OpenBuilds OX CNC 1000 x 750 with GRBL V0.9j controller) (Program Name : Stroom) (5 Operations (1 : 2D Pocket1) ( Tool : Flat End Mill 3 Flutes, Diam = 6.35mm, Len = 19.049999999999997mm) ( Spindle : RPM = 10000, set router dial to 1) ( Machining time : 18 min 34 sec) (2 : 2D Contour2) ( Tool : Flat End Mill 3 Flutes, Diam = 6.35mm, Len = 19.049999999999997mm) ( Spindle : RPM = 10000, set router dial to 1) ( Machining time : 5 min 23 sec) (3 : 2D Pocket2) ( Tool : Flat End Mill 3 Flutes, Diam = 6.35mm, Len = 19.049999999999997mm) ( Spindle : RPM = 10000, set router dial to 1) ( Machining time : 24 min 24 sec) (4 : 2D Contour3) ( Tool : Flat End Mill 3 Flutes, Diam = 6.35mm, Len = 19.049999999999997mm) ( Spindle : RPM = 10000, set router dial to 1) ( Machining time : 8 min 17 sec) (5 : 2D Contour4) ( Tool : Flat End Mill 3 Flutes, Diam = 6.35mm, Len = 19.049999999999997mm) ( Spindle : RPM = 20000, set router dial to 3.6) ( Machining time : 24 min 21 sec) G90 G94 G17 G21 (Operation 1 of 5 : 2D Pocket1) G53 G0 Z-10 G54 S10000 M3 G4 P1.0 X-853.9833 Y674.0642 Z27.94 Z15.875 G1 Z14.716 F1524 Z12.0015 X-853.9885 Y674.0581 Z11.9309 X-854.0037 Y674.0402 Z11.8638 X-854.0281 Y674.0114 Z11.8036 X-854.0606 Y673.973 Z11.7533 X-854.0995 Y673.9271 Z11.7155 X-854.1429 Y673.8759 Z11.692 X-854.1886 Y673.822 Z11.684 X-854.2092 Y673.7978 G3 X-855.23 Y671.014 I3.2836 J-2.7833 F2000 G1 X-855.231 Y175.722 G3 X-854.2031 Y172.9302 I4.305 G1 X-853.71 Y172.4383 G3 X-850.926 Y171.417 I2.784 J3.2837 G1 X-355.595 G3 X-352.8032 Y172.4449 J4.305 G1 X-352.3113 Y172.938 G3 X-351.29 Y175.7219 I-3.2837 J2.784 G1 X-351.2492 Y675.0393 X-351.2555 Y675.1026 X-351.2739 Y675.1635 X-351.3039 Y675.2196 X-351.3443 Y675.2687 X-351.3934 Y675.3091 X-351.4495 Y675.3391 X-351.5104 Y675.3575 X-351.5737 Y675.3638 X-850.9256 Y675.319 G3 X-853.7173 Y674.2909 I0.0001 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So, the issue you are having is with simulation only? From Peter in another thread "Correct, the simulator isnt clever enough for G2/3s sometimes, it just jumps from start-to-end points. Will run fine though" There are many of us using Fusion360 with the Swarfer post processor and I'm even using those with my BlackBox without issue. Have you tried to actually run the program? Do it without a tool in the spindle if you're worried.

I didn't run the SIM program in real time since the SIM wasn't working. I will try it without a bit in it.

OK..just tested it..It work great on the actual run! Everything went well! The only issue now is to get it to go to my "set to zero position" for all axis. It doesn't remember the coordinates when I save it in the main panel. This is really critical for repeated cuts and doing the other side of the board. I can't get it to start from the set zero positions. I added the G92 X0 Y0 Z0 but it doesn't work. Peter

The tool is ascribed two coordinate positions in CNC, absolute coordinates and relative coordinates (whatcha call machine and work coordinates). When you "set zero", you're setting the starting work coordinates for that job. All gcode is executed relative to that start "work" coordinate (barring an offset). To get to the same spot at the start of every run, you need to click "go to zero" before every job. There is a caveat. If at anytime you've lost steps / position throughout the previous job, it will not return to the exact spot. It will be off. The only way to ensure it gets to the same spot every time is to "home" first, but, when you home your zero is supplanted with "home" zero (absolute). The trick is to jot down your absolute coordinates as a backup, and " gotozero" after you home (mindful of z height), it'll jog to those coordinates. That'll get you to the same spot pretty much every time. Then your coordinates'll be coordinated. - Clear as mud? -

So I have to call the "set zero" work coordinates manually every times before a job right?? OK..I can do that..I am just was used to having it go to my "set zero" running a Marlin CNC..it would do that at the beginning of the job. I do have limits switches on the machine..I did test it with a "Home" call out and then a "Go to Zero" afterward and it work every time manually. Does the Black Box software remember or store the "Set Zero" after it off? I can't get it to go to the same location after every power off and on..I have to reset it manually with the coordinates written on my spoiler board.. Peter

Well, you only set zero once for a particular work piece. As for saving work zero after a power cycle...I'm pretty sure it does. When you click "setzero" in Openbuilds Control (G10 P1 L20 X0 Y0 Z0), it stores your absolute coordinates in P1 (G54). That will stay in the eeprom until it's overwritten or reset. Come to think about it, you also have 5 more work "presets" (called offsets). You home first, jog to where you want a preset to be and then you would store them with the same gcode line, just substitute the "P1" part with "P2" or "P3" and so on. When you need them, you call them at the start of your program with G54, G55, G56 and so on (respectively).

"So I have to call the "set zero" work coordinates manually every times before a job right?? " No you dont have to. You only want to do this if your work coordinates have change since the last job. "Does the Black Box software remember or store the "Set Zero" after it off?" Yes "I can't get it to go to the same location after every power off and on" Are you homing first? Be aware that when you rehome, the dros will show how far you are away from where you set your work coordinates. It will not show you 0,0,0. I only mention this because I see people on here get confused by that. This doesnt sound like your issue, but thought I'd throw it out there just in case.

Note - please "upload file" rather than pasting the text - it causes havoc with my phone when you do that. Glad to see you are getting sorted. Alex.

Thanks for the all the help guys. I will start the real first cut on this huge machine today. I am hoping to get the boat done in 1-2 months. I will post picture for those who might want to see it. Peter

I ran the real program this morning and it not cutting right. It's cutting in the air above the stock material. I ran the SIM in Fusion and it set right and cutting into the material as programmed. I did an auto home and then set my zero position to where it should start from, so everything is set at zero and the program run and goes to the first cutting position, but its raised the Z to 27MM up and cuts in the air... What am I doing wrong? Peter

Your code is telling it to do that. Double check that your setup in fusion and make sure your work origin matches where you set your Z0. If I were to guess, you have Z0 in fusion set to bottom of stock and your Z0 on the machine set to top of stock. Cant say for sure without more info. If you want to give me access to your fusion file, I'll be happy to look at it for you. Send me a DM and I'll give you my info.

Its still cutting above the material. I check the Z0 and its set at the lower left corner of the stock top. How do I send to the front hood fusion section to look at?

@sharmstr was suggesting that you start a conversation with her so that she could tell you how to share your Fusion folder with her - as its stored in the cloud you can give her permission to access your files. Alternatively you could EXPORT your file from fusion as an archive file - *.f3d (save to your computer) and then upload it to a post here. Alex.

OK..here is the .f3d file for the front hood of the boat. I didn't had this issue with the Lowrider 2 CNC. I cut most of the main parts on it out already and had no problem with a Marlin program setup, but the machine was very problematic and not very rigid,..I had to constantly monitor it and fix it. This machine is more rigid and accurate....super fast too..when it does touch the material and start to cut into it...it has no problem doing it..well it routed out the outline and I got a template of what needs to be cut out. I can use a hand router to finish the rest of the hood. I just need to final out what I am doing wrong with the GRBL setup and learn from it..also if I need to make changes in Fusion 360 for machining with GRBL or not.. Any help would be much appreciated! Peter

It seems to post fine for me. I even tried 5 other post processors and they all start at Z10.16 Code: X-853.98334 Y674.06421 Z10.16 X-853.98334 Y674.06421 Z10.16 X-853.98334 Y674.06421 Z3.175 G1 X-853.98334 Y674.06421 Z2.016 F1524 X-853.98334 Y674.06421 Z-0.6985 X-853.99896 Y674.04578 Z-0.81999 X-854.04345 Y673.99328 Z-0.923 X-854.11004 Y673.91471 Z-0.99182 X-854.1886 Y673.82202 Z-1.016 X-854.20917 Y673.79779 Z-1.016 Even if I set the origin to the bottom of the stock, it starts at Z22.86 so that's not it. I dont know if I'm gong to be able to explain why It posts fine for me and not for you. So, I started digging into the design. I was able to get similar Z values if I rolled your design back a few extrusions. Is it possible you posted a few times and loaded a previous gcode file and not the latest one? Just a guess.

Can you tell what post processing script you used. I used the Stroom one and my Z start is higher then your... I think it was at 15.10..on the Fusion Sim it run perfectly, once I post it and run it in GRBL it's running in the air.. Peter

The swarfer version of the stroom post: swarfer/GRBL-Post-Processor which by the looks of it, is the one you used Can you double click on your setup and resave, regenerate your tool paths, then repost? I remember a long time ago having a similar issue and Fusion hadnt updated my setup after I made a design change.

It's finally running right! I had setup the "Front Hood" as a brand new process. Its only work after I created new tool paths for all the cuts and selected the material as the "Model Body", then it work perfectly. Thank you everyone for the support, I thinking about changing the X axis design to the open build C Beam double carriage and spindle setup...there to much flex going on with my current setup on the Z axis. Its cutting 2MM multiple passes without issue, however when I sent it to 3MM depth it's causing to much skips on the belt. Feed rate at 2000mm/min. Peter

Excellent. Sorry it took me forever to remember that I had that weird no update issue a few years ago. LOL.

Marlin does not work at all like GRBL does. Forget that and learn the GRBL way' Yes indeed GRBL (the software on the blackbox) will remember your work offsets through power outs. I have never had a problem restarting a job after a power failure, something that happens often here in Africa.

Keep in mind between each job, the material will just be in a slightly different spot or a slightly different height. ZERO = Where's the Material. HOME = where's the machine. Two different things