HuntinDoug Posted July 3, 2012 Report Share Posted July 3, 2012 Hey Brett, I was looking at this pic in your other thread. I noticed the neck pocket looks like you either machined it in a vertical "raster" without a cleanup pass, or it has a major amount of chatter. The pup rout doesnt look that way though...? Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted July 6, 2012 Author Report Share Posted July 6, 2012 Hey Brett, I was looking at this pic in your other thread. I noticed the neck pocket looks like you either machined it in a vertical "raster" without a cleanup pass, or it has a major amount of chatter. The pup rout doesnt look that way though...? Neck routes have a differing amount of chatter depending on how hard the wood is. It is also only on the one side. I tried cleanup passes but the the Z-axis flex in my machine causes disaster with full depth passes. Not all of the neck pockets do this... only the really hard woods like padauk. I can remove it by speeding up the spindle a bit... but then I forget to turn it back down. Ultimately I leave .0005 roughing clearance and sand it out in about 3 passes. I have since changed the neck pockets but haven't had time to run the new code yet. Quote Link to comment Share on other sites More sharing options...
piercefield Posted July 6, 2012 Report Share Posted July 6, 2012 (edited) Have you tried power cut versus climb cuts? looks like the chatter was from a climb cut... you could always run your finish cut in a power cut direction which should yield a clean smooth cut regardless of the wood hardness due to the continuous inward pull on the bit... Be careful with the power cut as it can shear out splinters on hard brittle wood though... When in a situation you can't cut a certain direction because of end cut chipping you can always make an initial "in" cut at your end point say 1/4" in, then make your normal pass which will end at the 1/4" in cut you made You may already know all of this and I'm wasting breath... If so I apologize lol And you can always slow your feed rate which will be equivalent to a higher spindle speed... either way your decreasing bit load... Edited July 6, 2012 by piercefield Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted July 9, 2012 Author Report Share Posted July 9, 2012 Thanks for the advice. I will look at my code again. All that extra coding and toolpathing gives me a headache. For now I am going to leave i t alone. This winter I plan on revisiting all the drawings again. Right now I have guitars to finish... Quote Link to comment Share on other sites More sharing options...
MiKro Posted July 9, 2012 Report Share Posted July 9, 2012 Thanks for the advice. I will look at my code again. All that extra coding and toolpathing gives me a headache. For now I am going to leave i t alone. This winter I plan on revisiting all the drawings again. Right now I have guitars to finish... Brent I think Piercefield is thinking that you are hand routing? Mike Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted July 9, 2012 Author Report Share Posted July 9, 2012 Thanks for the advice. I will look at my code again. All that extra coding and toolpathing gives me a headache. For now I am going to leave i t alone. This winter I plan on revisiting all the drawings again. Right now I have guitars to finish... Brent I think Piercefield is thinking that you are hand routing? Mike Hand routing? Who does that anymore? That crap is dangerous. Quote Link to comment Share on other sites More sharing options...
piercefield Posted July 9, 2012 Report Share Posted July 9, 2012 Thanks for the advice. I will look at my code again. All that extra coding and toolpathing gives me a headache. For now I am going to leave i t alone. This winter I plan on revisiting all the drawings again. Right now I have guitars to finish... Brent I think Piercefield is thinking that you are hand routing? Mike Nah I know he's using CNC, I have been programming CNC for about 10 years now... did 5 in a furniture factory on a 4 head komo. I have learned about every trick to preventing chip out and chatter as well as some grades of maple fuzzing up... The ones that fuzz up are the pains in the ass... It's mainly all about feeds and speeds but power cut and climb cut on a CNC can be aweful if you don't you dont use some of the tricks... And anyone who climb cuts with a hand router will have disaster anyway lol Quote Link to comment Share on other sites More sharing options...
MiKro Posted July 9, 2012 Report Share Posted July 9, 2012 Thanks for the advice. I will look at my code again. All that extra coding and toolpathing gives me a headache. For now I am going to leave i t alone. This winter I plan on revisiting all the drawings again. Right now I have guitars to finish... Brent I think Piercefield is thinking that you are hand routing? Mike Nah I know he's using CNC, I have been programming CNC for about 10 years now... did 5 in a furniture factory on a 4 head komo. I have learned about every trick to preventing chip out and chatter as well as some grades of maple fuzzing up... The ones that fuzz up are the pains in the ass... It's mainly all about feeds and speeds but power cut and climb cut on a CNC can be aweful if you don't you dont use some of the tricks... And anyone who climb cuts with a hand router will have disaster anyway lol That's cool, we were notsure of your background. I'm fully aware of lead ins and lead outs and manyother things. Currently RAD is still in the learning curve and he will find what works for his machine. He is aware of editing Gcode but it can be overwhelming to someone that is new to this. Most CAM software can only do so much from vector to make a toolpath, so yes knowing how to edit certain parts is a need. So welcome to the fray. Mike Quote Link to comment Share on other sites More sharing options...
piercefield Posted July 10, 2012 Report Share Posted July 10, 2012 Thanks for the welcome mike... I am a process specialist engineer in the aviation field... I still program but now I program EDM's, Surface grinders, robots and lasers which have their own special quirks. Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted July 10, 2012 Author Report Share Posted July 10, 2012 Thanks for the welcome mike... I am a process specialist engineer in the aviation field... I still program but now I program EDM's, Surface grinders, robots and lasers which have their own special quirks. Welcome again. Any help is welcome. I am still learning what my cheap little machine can do without destroying things... I have a lot of Z flex with the current machine. I am also using a little colt palm router so I am not even using bits bigger than 1/4" This winter I might buy a bigger machine and a real spindle but it is starting to look like next year as this machine is fine for what I am doing with it right now. Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted July 22, 2012 Author Report Share Posted July 22, 2012 Blew up another X Axis motor this weekend.... didn't break the shaft but it locks up after moving a few inches. This never ends.... Maybe my shop is too hot? Quote Link to comment Share on other sites More sharing options...
MiKro Posted July 22, 2012 Report Share Posted July 22, 2012 Blew up another X Axis motor this weekend.... didn't break the shaft but it locks up after moving a few inches. This never ends.... Maybe my shop is too hot? So what exactly are they doing? What is the sound they are making? Again check the amps on the driver board. If it just stops then plug it (the stepper) into another axis and see if it stops. If not then it is most likely he stepper driver and not the stepper. Try a different stepper in that driver board, Set it up for the same cut without router running and set z higher and cut air. Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted July 23, 2012 Author Report Share Posted July 23, 2012 Blew up another X Axis motor this weekend.... didn't break the shaft but it locks up after moving a few inches. This never ends.... Maybe my shop is too hot? So what exactly are they doing? What is the sound they are making? Again check the amps on the driver board. If it just stops then plug it (the stepper) into another axis and see if it stops. If not then it is most likely he stepper driver and not the stepper. Try a different stepper in that driver board, Set it up for the same cut without router running and set z higher and cut air. Will do. The noise is bad.... it is like I had my hand on the X axis trying to stop it. Sounds like a transmission slipping. I was able to jog all over the place except for x0y15 to x16y15.... that is when it started. Now any movement on x from X0 towards X25 I get the noise. Quote Link to comment Share on other sites More sharing options...
MiKro Posted July 23, 2012 Report Share Posted July 23, 2012 Sounds like the lead screw is binding and you are getting resonance stall. Re adjust the lead screw. If nothing else loosen the bearing plates some and see what happens. Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted July 23, 2012 Author Report Share Posted July 23, 2012 So the lead screw is fine. Took motor lose and the X lead screw spun without any issues. The motor on the other hand... when the machine was off the motor had a hard spot in it after a few rotations. Unplugged it from the controller box. No better. Then after taking it lose from the lead screw it was almost every time I tried to rotate it would get stuck to the point I had to put the brass bushing on the shaft and use a good amount of force to spin past the tight spot. Called support again. We went thought the solder connections and eventually cut the leads free on the motor. And it seemed better but still a little stiff at about 10oclock to 12. They are sending another new motor. This time Probotix wants the old motor back to see what the deal is. Quote Link to comment Share on other sites More sharing options...
MiKro Posted July 23, 2012 Report Share Posted July 23, 2012 Okay cool. Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted July 24, 2012 Author Report Share Posted July 24, 2012 Okay cool. Thanks for the help Mikro... this keeps up and I may be able to troubleshoot one myself. Probotix said heat in the shop is not the problem... I think the X Axis hates me. Wondering if the motor might have been out of line a bit. I will be especially careful lining up the new motor when it comes in. Quote Link to comment Share on other sites More sharing options...
ScottR Posted July 24, 2012 Report Share Posted July 24, 2012 I think the X Axis hates me. The demon in the Hand of Doom had to go somewhere...... SR Quote Link to comment Share on other sites More sharing options...
MiKro Posted July 24, 2012 Report Share Posted July 24, 2012 Okay cool. Thanks for the help Mikro... this keeps up and I may be able to troubleshoot one myself. Probotix said heat in the shop is not the problem... I think the X Axis hates me. Wondering if the motor might have been out of line a bit. I will be especially careful lining up the new motor when it comes in. In my yoda voice--Buna -N connectors Luke Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted October 22, 2012 Author Report Share Posted October 22, 2012 That is it.. we are getting Buna -N connectors. I lost a Y motor this weekend, shaft snapped. Quote Link to comment Share on other sites More sharing options...
MiKro Posted October 22, 2012 Report Share Posted October 22, 2012 Yippee!! BUNA BUNA BUNA N Quote Link to comment Share on other sites More sharing options...
RestorationAD Posted October 22, 2012 Author Report Share Posted October 22, 2012 Yippee!! BUNA BUNA BUNA N I am almost to the point of selling this machine and moving on to a bigger machine. Quote Link to comment Share on other sites More sharing options...
MiKro Posted October 22, 2012 Report Share Posted October 22, 2012 Yippee!! BUNA BUNA BUNA N I am almost to the point of selling this machine and moving on to a bigger machine. Quote Link to comment Share on other sites More sharing options...
HuntinDoug Posted October 27, 2012 Report Share Posted October 27, 2012 Time to build one from scratch. It's not that hard if you choose the right plan, and it saves a lot of money. Not to mention the maintenance is easy. You can build a heavy duty 40 x 60 machine for under $6k. 1 Quote Link to comment Share on other sites More sharing options...
MiKro Posted October 27, 2012 Report Share Posted October 27, 2012 I second that motion, Build one. Quote Link to comment Share on other sites More sharing options...
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