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Z axis its not coming back up to 0 while cutting stars.

John McGovern #154978 ? ? ? ? ?I'm cutting unions for flags. I noticed that my Z axis was not coming all the way up from neg. Z. Is there a setting in Mach3 that would tell the machine to do this? I've checked my steps on the machine and they are right on. I dont have a clue why it started doing this. This is what I have a windows 10 machine, I use mach 3. I have a custom built 5ftx5ft machine. Any help would much appreciated. Thanks
Steve Stallings All Messages By This Member #154979 开云体育 Are you running?with Constant Velocity enabled, G64 mode? Doing so will result in X and Y starting to move before Z is fully retracted as the motion planner does blending of the moves to avoid slowing down. Try running in Exact Stop using G61 mode. toggle quoted message Show quoted text From: MachCNC@groups.io [mailto:MachCNC@groups.io] On Behalf Of John McGovern via groups.io Sent: Tuesday, October 19, 2021 2:24 PM To: MachCNC@groups.io Subject: [MachCNC] Z axis its not coming back up to 0 while cutting stars. ? ? ? ? ?I'm cutting unions for flags. I noticed that my Z axis was not coming all the way up from neg. Z. Is there a setting in Mach3 that would tell the machine to do this? I've checked my steps on the machine and they are right on. I dont have a clue why it started doing this. This is what I have a windows 10 machine, I use mach 3. I have a custom built 5ftx5ft machine. Any help would much appreciated. Thanks
Peter Homann All Messages By This Member #154980 Hi John, it may be that the acceleration for the Z axis is set too high. This results in lost steps when the Z axis rapids upwards. Try reducing the Z axis acceleration by 25% and see if that helps.? ?Cheers? Peter
Peter Homann All Messages By This Member #154981 After re-reading of the problem, Steve’s suggestion seems more applicable in this case.?
Paul Tegler All Messages By This Member #154982 there's a min Z above zero setting for moves (there's a little icon graphic denoting that min Z) -- Paul Tegler ptegler@... www.teglerizer.com
John McGovern #154983 开云体育 Thanks Sent from my T-Mobile 5G Device toggle quoted message Show quoted text -------- Original message -------- From: Peter Homann <groups@...> Date: 10/19/21 4:06 PM (GMT-06:00) To: MachCNC@groups.io Subject: Re: [MachCNC] Z axis its not coming back up to 0 while cutting stars. Hi John, it may be that the acceleration for the Z axis is set too high. This results in lost steps when the Z axis rapids upwards. Try reducing the Z axis acceleration by 25% and see if that helps.? ?Cheers? Peter
John McGovern #154984 开云体育 Thanks Sent from my T-Mobile 5G Device toggle quoted message Show quoted text -------- Original message -------- From: Steve Stallings <steve@...> Date: 10/19/21 4:04 PM (GMT-06:00) To: MachCNC@groups.io Subject: Re: [MachCNC] Z axis its not coming back up to 0 while cutting stars. Are you running?with Constant Velocity enabled, G64 mode? Doing so will result in X and Y starting to move before Z is fully retracted as the motion planner does blending of the moves to avoid slowing down. Try running in Exact Stop using G61 mode. From: MachCNC@groups.io [mailto:MachCNC@groups.io] On Behalf Of John McGovern via groups.io Sent: Tuesday, October 19, 2021 2:24 PM To: MachCNC@groups.io Subject: [MachCNC] Z axis its not coming back up to 0 while cutting stars. ? ? ? ? ?I'm cutting unions for flags. I noticed that my Z axis was not coming all the way up from neg. Z. Is there a setting in Mach3 that would tell the machine to do this? I've checked my steps on the machine and they are right on. I dont have a clue why it started doing this. This is what I have a windows 10 machine, I use mach 3. I have a custom built 5ftx5ft machine. Any help would much appreciated. Thanks

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