Accurite 3 " circle programmed incorrectly

[kwertmanX3F6N]

I keep getting an error on my accurite console that says circle incorrectly programmed. It doesnt always happen however in blocks of code that contain arcs. Is it my console goofing or is their a post issue. I changed my lead in to plunge, and zig zag thinking it was the helical lead in but that didnt fix it. Im maching a slot and im wondering if my end mill may be too large for the slot causing fusion to compensate with a goofy line of code. I didnt think it would accept the toolpath if the cutter can complete the geometry but im just getting sick of the errors from this accurite console. I tried the accurite 2 post but it wont do anything helical. Any help i would appreciate. We are machining a battlebot weapon for my hs team out of mild steel.

[LibertyMachine]

Could you attach your code and perhaps a sample Fusion file demonstrating the issue?

File > Export > Save to local folder. Return to thread and attach the .f3d file in your reply

[kwertmanX3F6N]

I wish I wrote down what block exactly was causing the error but if my memory serves me correct it was a line of code similar to block 80. Ive had this issue on multiple occasions not just this one. Normally I skip the block of code but sometimes that equals trouble. Sometimes if I restart the program it will run it but on this occasion it was relentless on not liking the code. Normally a program will run from start to finish. I think its me not understanding a basic machining concept combined with not having a surplus of tooling at my disposal that could be the issue here but I thought I would get another opinion.  The pocket I am trying to machine is the long slot in the arm portion of the weapon. I was able to machine the slot in the end of the weapon (hammer head shape)  without any issues. I chose this endmill because it is sharp. After a school year in a hs shop dull endmills are at a surplus. Ive attached the drawing. We are machining the counter weights separate. They were drawn as separate bodies. Thanks for taking the time to look into this. It is much appreciated!

(pocket weight reduction)
(T1  D=0.3125 CR=0 - ZMIN=-0.43 - flat end mill)
N10 G90
N15 G17
N20 G20
(2D Pocket2)
N25 M9
N30 T1 M6
N35 S10000 M3
N40 M9
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N50 Z0.6
N55 Z0.2
N60 G1 Z0.1 F20
N65 X4.2537 Z0.0699
N70 X5.785 Z0.0164
N75 X4.3131 Z-0.035
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N85 X4.3599 Y3.0556 I0 J0.0469
N90 G1 Y3.1494
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N100 Y3.0087 I0 J-0.0938
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N115 G1 X4.3131
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N125 G1 X5.3158 Y3.1185
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N150 G1 Y3.1494
N155 G3 X4.3131 Y3.1963 I-0.0469 J0
N160 Y3.0087 I0 J-0.0938
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N220 Y3.0087 I0 J-0.0938
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N235 G1 X4.3131
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N295 G1 X4.3131
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N325 X4.3599 Y3.0556 I0 J0.0469
N330 G1 Y3.1494
N335 G3 X4.3131 Y3.1963 I-0.0469 J0
N340 Y3.0087 I0 J-0.0938
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N375 G1 X4.3131 Z-0.21
N380 G3 Y3.0088 I0 J-0.0469
N385 X4.3599 Y3.0556 I0 J0.0469
N390 G1 Y3.1494
N395 G3 X4.3131 Y3.1963 I-0.0469 J0
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N425 G1 X5.3158 Y3.1185
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N435 G1 X4.3131 Z-0.245
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N445 X4.3599 Y3.0556 I0 J0.0469
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N460 Y3.0087 I0 J-0.0938
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N545 G1 X5.3158 Y3.1185
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N745 X4.3599 Y3.0556 I0 J0.0469
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N760 Y3.0087 I0 J-0.0938
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N795 G1 X4.3131 Z-0.43
N800 G3 Y3.0088 I0 J-0.0469
N805 X4.3599 Y3.0556 I0 J0.0469
N810 G1 Y3.1494
N815 G3 X4.3131 Y3.1963 I-0.0469 J0
N820 Y3.0087 I0 J-0.0938
N825 G1 X7.7291
N830 G3 Y3.1963 I0 J0.0937
N835 G1 X4.3131
N840 G3 X4.3036 Y3.1948 Z-0.4285 I0 J-0.0313
N845 X4.2957 Y3.191 Z-0.424 I0.0095 J-0.0298
N850 X4.2905 Y3.1866 Z-0.4171 I0.0173 J-0.026
N855 X4.2876 Y3.1832 Z-0.4084 I0.0226 J-0.0216
N860 X4.2868 Y3.1819 Z-0.3988 I0.0254 J-0.0182
N865 G0 Z0.6
N875 M9
N880 M2

[LibertyMachine]

First, a gentle correction: When posting code, please attach it as a .nc or .txt file. In this instance, it was quite short, so it's not a huge deal. We've had people copy/paste 1500 line programs (goes on for pages) and it makes it wearisome.

Please take a look at the attached file. I've made some changes to your approach:

For the geometry, I selected the Bottom of the slot. I then set the "Bottom Height" to "Selected Contour" and then some additional material. Just trying to establish some good practices and make things easier.

I then changed your cutting conditions slightly. I discarded "Multiple Depths" in favor of changing my Ramping conditions to use the "Profile" instead. This gives us a gentle continuous ramp all the way down to final depth. I also set the Clearance Height to zero, just because I hate cutting air. You can set it back to the value of .10" if you wish

One last change; I turned off your vertical lean-in/out radius as that can sometimes cause some grief with certain controllers. Just easier to get it out of the equation rather than bump into that issue later. I also changed the Lead-out to 135 degrees, so it would sorta lead back to center

[kwertmanX3F6N]

Sorry. I tried to attach the code but it came up with an error that removed it automatically before it would allow me to post. So im finding that slow and steady seems to be the best for successfully getting parts made. For the kids to understand how important decimal points can be is the first step in successfully machining parts on the cnc mills. I didn't realize you could adjust the depth of cut in the ramping angle while cutting. I don't have a machine that we can flood coolant with but I use a cold air nozzle to keep the bit cool. What would you be recommending as a depth of cut for the kids? As I explained before the tooling is all non coated hss flat and ball end mills. I have the kids use 4 flute end mills on steel and 2 flute on aluminum. Right now I have the kids taking .035 depth on steel and .050 on aluminum at a federate of 25 fpm. I have the kids turn all the lead in ramping and plunge federates way down to prevent z axis crashes. Everything I watch online seems to be much more aggressive. I'm starting to understand the chip removes heat from the part. I guess if I could start with a brand new end mill every time the number could come from a chart but that is not the case. Many times I do I visual inspection of the end mill and that's all I know about it before making the cut. As soon as a dull end mill starts doing its thing on steel it work hardens and then makes the next sharp end mill cut through the hardened layer. I'm hoping to upgrade tooling in the future but its a lot of work getting the kids to a self sufficient point in the machining world. It starts with how to install a bit in the machine so getting them into the production mindset just isn't a goal of mine. I hope to make them understand how to machine both manually and then eventually with cnc at a level they can do independent machining work. The machines im working with are Bridgeport and acer knee mills. Power is sufficient. The Bridgeport has a misting system that I need to work on. It dumps out so much coolant that it not usable at this point. I have a small table top mini mill that I have the kids start out on to get the hang of setting offsets and running g code programs.