sheetcam tng problems

[_Ogre]

plasma test.dxf

plasma test.dxf

(53.01 KiB) Downloaded 91 times

mrt bronco3.dxf

mrt bronco3.dxf

(62.31 KiB) Downloaded 77 times

or so i believe i have a problem within sheetcam.

i am new to cnc in general, a total newb to cnc plasma cutting. just did a test of our new bulltear 4x8 w/ dthc, mach3 bladerunner and powermax 65. the table was a turn key and came loaded with all the mach3 setup done. the torch fired and cut the shapes i had drawn just out of scale. i am fairly well versed in autocad 2000 and use it for all technical drawings. i had drawn simple shapes ''plasma test'' 2- 2'' circles and 2- 2'' squares and an arc thingy. the circles and squares cut great, they were just 4.5'' across instead of 2'' as drawn. any ideas of what i did wrong?

plasma test


so i moved on to my first real project. ''mrt bronco3'' is a couple of simple signs to be cut out of 10 ga mild steel. it took me a few times to get all of the arcs drawn to make 1 pierce per letter, when i run sheetcam it has the outside of one sign cut first then the letters. then sheetcam jumps around cutting some letters in the 2nd sign then some letters in the 3rd sign, then the outside of one sign and then the rest of the letters. how do i move pierce point and the layout of the cuts?

mrt bronc3


i'll upload both plasma test and mrt broco3 dxf files

[_Ogre]

also can any one tell me how to do a test draw? or test the cut path without the torch on?

i tried to run the gcode in mach3 with the torch off and z axis zeroed out one half inch above the water table slats. the z axis went past zero and traveled below the slat surface.

[Metriccar]

Do you have pics of those test squares? I'm interested in seeing them. It sounds like you had THC on so the torch tip tried to go down and hit the material.

[_Ogre]

i had the thc off on the mach3 screen. i figured with thc off the torch would go to pierce height and no farther. i also had the torch off electrically and on the screen.

[abmagrum]

hey Ogre
here are some tutorial videos on sheet cam and mach see if they help

http://arclightcnc.com/training.html

there free no catches

[SeanP]

Not sure about the scaling problem although you can alter the scale when you import the drawing to sheetcam, doubt you will have that set wrong though, does it move say 1'' when you enter 1'' into mach manually?
Your drawing loads fine and to scale into my sheetcam

To do a test run I just turn off the power to the plasma, turn off thc in mach and away it goes.

To keep the parts cutting together you might change the cut path settings in the operations window.

Sean

sheetcam.jpg (63.5 KiB) Viewed 2050 times

[Largemouthlou]

I Put your file into Sheetcam tng and the square and circle measure out to 2" so you may have to retun the steps on the machine for some reason, also like said ck the scaling.. Need to get ahold of Bullteer and have them walk through this with you.

Also you have open pathes on the R's whish is causing sheet cam to get a little confused, fix the R's and all should be good in the cut order.

[_Ogre]

thanks for the feedback people. first thing i should have done is to run a scale on the table and check my travel. i'm new to this and have severe crs at times
largemouth; thanks for checking my dxf in sheetcam

[_Ogre]

hey Ogre
here are some tutorial videos on sheet cam and mach see if they help

http://arclightcnc.com/training.html

there free no catches

wow. i wish i had seen those videos a month ago. explained a lot in mach3.
never could get the the cut path to zoom. thanks for that link abmagrum