Re: [Emc-users] SPAM: Re: freecad, latest, starter tut?

2020-09-21 Thread Gene Heskett
On Tuesday 22 September 2020 01:39:49 Frank Tkalcevic wrote: > I was impressed that FreeCAD could import lots of different CAD > formats. I tried to use the CAM (Path) on an old STEP file, but I > couldn't work out how to orient my part, and set the origin to the > bottom-left top corner of the b

Re: [Emc-users] jerk control for high speed machines

2020-09-21 Thread dave engvall
Hi again, Indeed it is pretty hard to use spindle load if is doesn't change thru the corner. I suspect it does on smaller machines but that is not a generalized solution. Just for experimental purposes it might be interesting to decrease the velocity thru a corner see if it helps. Lacking the a

Re: [Emc-users] SPAM: Re: freecad, latest, starter tut?

2020-09-21 Thread Frank Tkalcevic
I was impressed that FreeCAD could import lots of different CAD formats. I tried to use the CAM (Path) on an old STEP file, but I couldn't work out how to orient my part, and set the origin to the bottom-left top corner of the box stock. Reading the forums, it seems that isn't possible (talk of l

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-21 Thread R C
Hello, I was away for a while, I saw a lot of replies/suggestions on the "subject".   I am going to try and see if I can make the part (a shaft) in freecad, and see what I can do with it. As for the other software,  well I won't be making money of it, It's just a hobby,  BUT  I don't reall

Re: [Emc-users] jerk control for high speed machines

2020-09-21 Thread Leonardo Marsaglia
My first innocent thought was to use a DDT component somehow but I guess this involves fgpa programming if you're using Mesa boards. It sounded simple at first but as you think it through it you realize it's a pain in the ass. Mostly because my only fpga experience is controlling displays lol. I

Re: [Emc-users] jerk control for high speed machines

2020-09-21 Thread andrew beck
hey dave I hear you. I might get good at coding myself soon.. but would love to solve the problem. I don't think the spindle load could really help much though. I am machining plastic and aluminium and the spindle load doesn't noticeably change in corners. I more need a limit on the initial a

Re: [Emc-users] jerk control for high speed machines

2020-09-21 Thread dave engvall
HI Andrew, Just because I have ideas does not imply I can implement them. ;-) However, I believe there is a velocity pin that might be used to slow down in corners. Since the spindle loads up going thru corners it may be possible to monitor spindle load and back off velocity thru the corner wh

Re: [Emc-users] SPAM: Re: freecad, latest, starter tut?

2020-09-21 Thread Todd Zuercher
Generating g-code with Freecad is a bit of an arduous process. Especially for the first time. After you've made your 3d model, you have to convert that drawing into a part, then you have to create a Job amd set up your tool library, then add the tools to the Job, then configure the machine dri