Afternoon yall,
my cuts are out of round any thoughts?
1/2” plate 83amps 40ipm outside and 20ipm feed opt. for the ID circles, 73psi.
no binding, table is square, torch is Square.
its really flat on the start and stops of the cut. you can see my thumb is its entry and exit.
I am assuming you have a Hypertherm plasma cutter. Your cut speeds in line. It appears that the consumables are worn out. The bevel could be the cut height.
everlast 102i. but my next one will def. be a hypertherm.
cut height .1
PD 1
PH .2
lead in and outs are .150 radius 90deg .2 lead in distance
thanks for the reply!
man i have a long ways to go!! looks way better than mine.
do you ever struggle with your starts and stops not being a smooth transition on the part?
No, but you don’t have a Hypertherm; your cut speed is way too fast. Slow it down to around 21 ipm
Use my settings with the new tip and electrode. I believe you can duplicate this.
Use this chart.
Increase your lead-in and out. I use 90° leads. Ensure your kerf setting is correct in Fusion. I don’t make signs, so I always use a tip of 10 amps larger than my settings. I couldn’t care less about the kerf width. The kerf must still be entered correctly in Fusion to allow it to adjust the G Code.
Thank you for the help! Just got my shielded consumables from Goerge in today. appreciate the cut chart ill give it a go toorrow.
That cut is improving but just to make sure, have you measured your cut height? You stated earlier that you were setting it at 0.1 inches (which is way too high). BigDaddy sets his height at 0.062 inches.
Also, you need to verify what your actual cut height is when you set it to 0.062. Sometimes stopping your cut midway during a cut may not be accurate if THC (torch height control) is adjusting the height for the voltage.
Load this file, run it like you are cutting. It is setting the cut height to 0.060 inches plus it is adding 0.020 inches for springback/backlash. It will cycle for the table thru the IHS (initial height setting) and then stop at the cut height. Measure distance from the metal plate to the torch tip with feeler guage. It will not be firing the torch.
I am sharing two different test files: one is with the springback setting and the other is without. You should get a results difference of 0.020 inches less with the file labeled “NOSPRINGBACK”.
(Files courtesy of Phillip)
cut height testNOSPRINGBACK.tap (223 Bytes)
cut height test F360.nc (222 Bytes)
Let us know what you get.
Also, supply the first 20 lines of your gcode file so we can see how Fusion is CAMing your project.
Last thought, there still appears some extra movement whether it is loose mounting of the torch or something to do with the ball screws (whatever they are called) that travel on the lead screws.
I agree with @ChelanJim. It appears your cut height is incorrect. Run the test file Jim posted. The torch will travel down to the setpoint and stop. No plasma cutting. You can then measure the distance and see if it matches Fusions. 062 setpoint.
Thank yall so Much!!!
im very new to this, i know from reading cut heightis supposed to be 0.062” but my nozzles were cheap Chinese crap and was blowing thru them so fast from slag being on the tip. i had to raise it up way out of parameters ( only way to get my short supply of tips to last) just to complete my first big order. (Mr Goerge hooked my up with his consumales. just got done cutting with shielded cons. and love them!)
.059” on no spring back test
.080” with SB
I think my Ball-nut on my y-axis lead screw is not performing up to par… torch and z axis carriage is tight and no slop.
just cut with shielded cons. @
70amps 25ipm 72psi
CH .080” ( First cuts with new shielded and needed it to not screw up for rush job whys its not .062”)
PH .120”
PD 1.2 secs
P.S. running my finger down the cut like top of plate down cut to bottom side of plate its not straight its concaved, put a square on it and its gapped in the middle
This was what i was cutting with the wrong Parameteres
(v1.6-af)
G90 G94
G17
G20
H0
(2D Profile1)
G0 X4.9733 Y5.3819
G92 Z0.
G38.2 Z-5. F100.
G38.4 Z0.5 F20.
G92 Z0.
G0 Z0.02 (IHS Springback + Backlash)
G92 Z0.
G0 Z0.28 (Pierce Height)
M3
G4 P1.
G0 Z0.1 (Cut Height)
H1
G1 X4.7928 Y5.3034 F35.
G3 X4.6893 Y5.0402 I0.0798 J-0.1834 F35.
G3 X5.988 Y5.3105 I0.6212 J0.2703
G3 X4.633 I-0.6775 J0.
G3 X4.6893 Y5.0402 I0.6775 J0.
G3 X4.9525 Y4.9366 I0.1834 J0.0798
G1 X5.133 Y5.0151
H0
M5
G0 Z1.
The right settings and consumables makes a big difference.
From here on out, I think you understand that spending more for good consumables, saves money and time.
Good job!
Glad to see you got this.
Final comment (looking at the gcode you supplied):
