Hey everyone, I’ve been using my machine for a while and was cutting all week without issue. I have a Thermal Dynamic - Cutmaster 82 with an SL-100 machine torch. Typically my delay has ran fine at .5 seconds I believe is what it was but this morning I walked in the shop and my first cut I did had a 1 inch section that was untouched. So I cut some test and the minimum now is 1.4 seconds. My understanding and I may be wrong it that the plasma machine has a safety switch typical for the pierce if I were using the SL-60 hand torch but that the SL-100 machine torch should bypass said delay. What changed? What am I missing? 1.4 seconds seems crazy.
So what were your cut settings?
Is this a new file? or have you cut it before?
What thickness material?
So your saying the Pierce delay was 1.4 secs? did you time it? How did you decide it was 1.4?
where was the 1" spot it did not cut? beginning, middle, end?
Work clamp on the material being cut?
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Well I just remembered I changed the ground clamp for a grounding magnet. Maybe that’s it as that’s all that’s changed. The 1 inch was at the beginning of the cut and then it cut fine.
Work clamp is not going to change the torch fire.
Post a screen shot of your settings, or post the .nc file that you are uploading in to FireControl.
This happens to me if my work clamp is not on the part being cut.
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Before (everything cut good)
Courtney’s Flag 48x34.nc (210.4 KB)
Now (leave around a 1/2 to 1 inch uncut section at the beginning of the path)
Conor - Stainless Bowtie.nc (538 Bytes)
Truck Bed overlay 2.nc (9.6 KB)
This was also one that was messed up
Can’t help you until you answer the basics I asked originally
150 ipm
New file
10 gauge steel
thats the peirce delay i had to input into my tool on fusion in order to get it to cut the entire piece.
Beginning and i had the ground magnet on the piece
Take the magnet off and put the clamp back on and see if it works
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Already did. No improvement.
Only other thing I would look at would be the start cartage may be sticking.
Is is every single pierce that it misses a section and a long delay, or just the very first one?
You need to check what your plunge rate is set to. Also, the bowtie shows program speed of 40 and the flag a speed of 50. So do you have your settings confused? You told us 150.
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There should’t be a difference in how the code appears from sheet cam to fusion right? Here’s a snippet from his code in fusion
G92 Z0.
G38.2 Z-5. F100.
G38.4 Z0.5 F20.
G92 Z0.
G0 Z0.04 (IHS Springback + Backlash)
G92 Z0.
G0 Z0.15 (Pierce Height)
M3
G4 P0.5
G0 Z0.063 (Cut Height) WHERE IS PLUNGE RATE?
H1
G1 X23.7877 Y20.2046 F50.
G1 X23.784 F50.
Here’s mine in sheet cam different file obviously.
G92 Z0.
G38.2 Z-5.0 F100.0
G38.4 Z0.5 F20.0
G92 Z0.0
G0 Z0.02 (IHS Backlash)
G92 Z0.0
G0 Z0.15 (Pierce Height)
M3
G4 P0.5
G1 Z0.06 F60.0 (Cut Height). MY PLUNGE RATE?
H1
G1 F130.0
G3 X8.9753 Y5.8138 I-0.0016 J0.08
That is interesting!
I just looked back on ALL of my gcode files and none of them have the plunge rate entered. It is just as the OP’s file has it. (My files are all from Fusion post processor).
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Wait, I vaguely remember someone saying fusion plunge rate is defaulted to something perhaps?
Yes, I think it is 100 ipm, but you would think that would need to be in the gcode for FireControl to know what to do. Perhaps FireControl does 100 ipm without any other directions.
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This is a RAPID (G0) command. It doesn’t use Plunge rate, it uses the default rapid rate (whatever that is on your system).
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The plunge rate in fusion g-code is 20 IPM.
If there is no speed given on that line, it defaults to the last speed command. That speed is the 20 IPM speed at the end of the IHS loop.
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