Sorry, little slow getting back to you. What I did , using your reductions and lead info, was to go to one of my machines using DESK CNC and set up the following for a safe machine. The figures are conservative, but will get you going, then you can add from there untill the servo's fault or the machine says
"No More"
AXIS PAGE 1ST
One change only..change max sps to 25000 ( note you used 3500, make sure the change is to thousands) on all axis..
MACHINE VELOCITIES PAGE
Acceleration = 125000
Scale= 20
Max Velocity= 25000 (to match Axis set up)
Start Velocity= 2500
Jogs = 1000,600,200
I ran my machine for 2 hours plus (not cutting ) had no faults, every thing worked correct..Little slow, but you can start here.
I do not know why your DeskCNC is so old, but my advice is to go to
www.deskcnc.com and hit "contact"..they will drop down an E mail form, just tell them your version and ask if you can download the latest version.
I had a corrupted file in my 2nd DESK CNC, and I downloaded from them (they must be the distributor in the US ) and it was a newer version.The newer versions are faster, go to 50000 sps and have some other nice features.I was not charged for the newer copy. You will have to fill everything in again, but you should be pretty fast by now, right ? Remember it is a hobby, and you are having fun.. right ??
Have you downloaded the info from IM Service yet..That is real valuable, especially the G Code explinations and the troubleshooting manual, both prepared by Fred Smith at IM Serv, and at no cost..
When you get past the set up, you will find that this is a very good program:
With the "look ahead" features, it will slow down before changing directions, avoiding jerks and thumps...which means better control of tolerances..etc.After using a couple of times I'm sure you will enjoy the ease and simplicity of DeskCNC..I did struggle with the set up too..
Hope this helps, and post some pictures of your project, I am sure a lot of people on the fourm would like to see them..Keep us posted.
Adobe (old as dirt)