When checking the runout of the spindle, don't use a collet. Measure the inside of the spindle taper directly. Much of the runout you saw was likely from the collet. You may be able to "tune out" some of a collet's runout by twisting the collect in the taper.
Any more cnc videos coming ? Also did you check for "tool wear" in regards to tolerance issues ? For example your 6mm endmill might actually be 5.95mm-6.05mm. Even if there is no tool wear you could try putting tool wear in the software anyway to see if it gets you closer to the desired size cuts. (almost like a work around due to your last video saying backlash compensation didnt seem to work)
Couple of things I noticed in your last video: 1) Are you using a finishing toolpath? Adadptive clearing will never give a good size or finish 2) if you're consistantly over or undersize, look at using cutter compensation.
Did you surface the aluminum sacrificial plate? If yes, did you program it in G-Code via something like Fusion 365? If yes, can you share that G-Code and information about the end mill(s) you used? 😉
@SciCynicalInventing when inputting the scripts for the probes do you completely erase what’s currently in the mach3 program with the script or is there a certain place you replace up to? Thank you in advance and happy holidays!
Many thanks for posting this updated video. You saved me a lot of frustration with the spindle wiring. Omar's picture in the manual for wiring the spindle plug is definitely wrong for the green wire. Once I matched your wiring my spindle would start to spin, but only when I pushed the start button on the inverter, and ramped it between 50 and 400 Hz. The thing I am now missing is how to set up and control the inverter from Mach3. Any suggestions would be appreciated...😊
Take a look at the "DMC Software Instructions" pdf step 9 (page 18), assuming all your wiring is correct, there are some settings on the VFD that you will need to change to allow mach 3 to trigger the VFD for spindle control. Im assuming you also set up your ports and pins correctly in the mach 3 software as well. The booklet that comes with the VFD also has instructions on how to change the values in tbe VFD for external control.
I don't use the corner probing, I've survived just with using the provided scripts. However, If you want a specific script you might want to check out the original authors youtube channel: ruclips.net/video/MQ9XT30s-PU/видео.html If you can't find exactly what you need you might have to program a script yourself, there are some reference manuals available: www.machsupport.com/wp-content/uploads/2013/02/Mach3_V3.x_Macro_Prog_Ref.pdf
I have a question on the X axis ball nuts. How tight/loose is the compression stack to be? Msg me if you need more info, hard to explain. I have lots of trouble getting it to drill/mill holes where i designed them with fusion 360.
Well obviously the double ballnut is there so you have no backlash when switching direction, and the tighter you compress the double ballnut the less likely you will introduce backlash under hard cutting loads when switching direction. Although for most people it would be enough to just compress the ballnuts so the ballscrew can still be easily rotated by hand. The more you compress the ballnuts the more friction/wear you create and the motors work harder/hotter. I honestly do the compression by feel and then always check my backlash and then run some test cuts/programs to check accuracy and see how hot my motors and drivers/amps get. Ive heard some people having problems with their shaft couplers slipping too, which can cause weird travel issues. So make sure the couplers between the motors and ballscrews are not slipping. Hope that helps.
Hi mate, I have the DMC2 and it jogs by the hand held controller or by the computer. I have changed the scripts for the probing but i cant find any info on how to mill the bed flat? How did you do yours mate? cheers Andy
Milling the bed would require you to learn how to make a gcode file. I modeled a rectangle the size of my DMC2 bed in fusion 360 and setup a facing operation toolpath. I believe Omar has good videos on setting up cutting operations in fusion 360. Alternatively, you could learn Freecad and do that there. There are quite a few ways of making gcode files, even writing a file manually is possible if you understand the code enough. Hope that helps.
@@SciCynicalInventing Hi and thanks for replying, I thought I’d need to do that in Fusion so thanks for confirming this. I have actually made a 350mm by 250mm by .5mm thick part in fusion. I think I need to sort out the tools first so I can mill the bed. Did you use the tools that Omar supplied and is it easy enough to add these tools into fusion? Once I get past this stage I will mount the vice so I can calibrate the probes. Did you set your probes up after you milled the bed? Thanks for your help I appreciate it. Andy
@@hornbachhh I used my own endmills and insert cutters and just found the closest sized tool in fusion 360s library to use for my toolpaths. If your using a 5 or 10 mm endmill there should already be a tool that size in fusions library but keep in mind you can always modify that tool any way youd like (change the diameter, etc). I think i set up my probes last. I am used to touching off a part using the tool and a piece of paper. Theres many ways to do it.
this was amazing! you properly saved me weeks of work! thanks
When checking the runout of the spindle, don't use a collet. Measure the inside of the spindle taper directly. Much of the runout you saw was likely from the collet. You may be able to "tune out" some of a collet's runout by twisting the collect in the taper.
Any more cnc videos coming ?
Also did you check for "tool wear" in regards to tolerance issues ? For example your 6mm endmill might actually be 5.95mm-6.05mm.
Even if there is no tool wear you could try putting tool wear in the software anyway to see if it gets you closer to the desired size cuts. (almost like a work around due to your last video saying backlash compensation didnt seem to work)
Couple of things I noticed in your last video:
1) Are you using a finishing toolpath? Adadptive clearing will never give a good size or finish
2) if you're consistantly over or undersize, look at using cutter compensation.
Did you surface the aluminum sacrificial plate? If yes, did you program it in G-Code via something like Fusion 365? If yes, can you share that G-Code and information about the end mill(s) you used? 😉
@SciCynicalInventing when inputting the scripts for the probes do you completely erase what’s currently in the mach3 program with the script or is there a certain place you replace up to? Thank you in advance and happy holidays!
I replace the entire script, just copy and paste the new script in. I will be doing a linuxcnc retrofit on this machine soon however. Happy holidays!
You too man thank you so much!
Many thanks for posting this updated video. You saved me a lot of frustration with the spindle wiring. Omar's picture in the manual for wiring the spindle plug is definitely wrong for the green wire. Once I matched your wiring my spindle would start to spin, but only when I pushed the start button on the inverter, and ramped it between 50 and 400 Hz. The thing I am now missing is how to set up and control the inverter from Mach3. Any suggestions would be appreciated...😊
Take a look at the "DMC Software Instructions" pdf step 9 (page 18), assuming all your wiring is correct, there are some settings on the VFD that you will need to change to allow mach 3 to trigger the VFD for spindle control. Im assuming you also set up your ports and pins correctly in the mach 3 software as well. The booklet that comes with the VFD also has instructions on how to change the values in tbe VFD for external control.
Thanks for publishing the video - useful comments :)
Hi, is your corner probing button script working OK?
I have a DIY CNC running that PA screen, but those corner buttons don't work properly.
Thanks
I don't use the corner probing, I've survived just with using the provided scripts. However, If you want a specific script you might want to check out the original authors youtube channel:
ruclips.net/video/MQ9XT30s-PU/видео.html
If you can't find exactly what you need you might have to program a script yourself, there are some reference manuals available:
www.machsupport.com/wp-content/uploads/2013/02/Mach3_V3.x_Macro_Prog_Ref.pdf
@@SciCynicalInventing
Thank you so much for the complete reply!
Good luck 🙌🏻🙂
Would love to see an enclosure for this bad boy very interesting machine for the price point...
I have a question on the X axis ball nuts. How tight/loose is the compression stack to be? Msg me if you need more info, hard to explain. I have lots of trouble getting it to drill/mill holes where i designed them with fusion 360.
Well obviously the double ballnut is there so you have no backlash when switching direction, and the tighter you compress the double ballnut the less likely you will introduce backlash under hard cutting loads when switching direction. Although for most people it would be enough to just compress the ballnuts so the ballscrew can still be easily rotated by hand. The more you compress the ballnuts the more friction/wear you create and the motors work harder/hotter. I honestly do the compression by feel and then always check my backlash and then run some test cuts/programs to check accuracy and see how hot my motors and drivers/amps get. Ive heard some people having problems with their shaft couplers slipping too, which can cause weird travel issues. So make sure the couplers between the motors and ballscrews are not slipping. Hope that helps.
Hello sir, is it possible to make powerful infrared laser on handwatch that can burn matchstick from 2, 3 meter distance easily.
Great follow-up. Thanks.
Hi mate, I have the DMC2 and it jogs by the hand held controller or by the computer. I have changed the scripts for the probing but i cant find any info on how to mill the bed flat? How did you do yours mate? cheers Andy
Milling the bed would require you to learn how to make a gcode file. I modeled a rectangle the size of my DMC2 bed in fusion 360 and setup a facing operation toolpath. I believe Omar has good videos on setting up cutting operations in fusion 360. Alternatively, you could learn Freecad and do that there. There are quite a few ways of making gcode files, even writing a file manually is possible if you understand the code enough. Hope that helps.
@@SciCynicalInventing Hi and thanks for replying, I thought I’d need to do that in Fusion so thanks for confirming this. I have actually made a 350mm by 250mm by .5mm thick part in fusion. I think I need to sort out the tools first so I can mill the bed. Did you use the tools that Omar supplied and is it easy enough to add these tools into fusion? Once I get past this stage I will mount the vice so I can calibrate the probes. Did you set your probes up after you milled the bed? Thanks for your help I appreciate it. Andy
@@hornbachhh I used my own endmills and insert cutters and just found the closest sized tool in fusion 360s library to use for my toolpaths. If your using a 5 or 10 mm endmill there should already be a tool that size in fusions library but keep in mind you can always modify that tool any way youd like (change the diameter, etc). I think i set up my probes last. I am used to touching off a part using the tool and a piece of paper. Theres many ways to do it.
@@SciCynicalInventing Awesome thanks again 👍
Hi me again sorry to bug you. Does your emergency stop button work on your hand controller?
Did the machine come with two screw nut per ball screw, or did you add one screw nut per ball screw.
Each axis has 2 nuts per ballscrew that you need to adjust
i came here for additional info on devil may cry 2 :-[
Is it a good game? Ive never played it but heard some good things