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Author Topic: Mach3 Future...S Curve and Multiple accelerations  (Read 3837 times)

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Mach3 Future...S Curve and Multiple accelerations
« on: November 23, 2009, 04:37:21 PM »
Hello, I'm a long time Mach user and have some questions on future versions of Mach and what we might expect to see.
Mach is an awesome program and I love it thats for sure!

First here is a video that has peeked my curiousity about where Mach might be heading some day.


If you watch the video what I find intresting is the way acceleration/decel is handled. What research I've done on this, the router is a Camaster using wincnc controller.
Wincnc has "S curve" I believe. But I dont' think that is the only thing we are seeing in the video. I am not understanding it completely but apparentlly you
can assign more than 1 acceleration setting in the controler. I do not know how exactly this works in the gcode (anyone know?) but find it very intresting. I would love
to have fast acceleration on rapid moves and I love how in the video the router slows down and accelerates around tight curves. I found it very intresting. I am not sure
just how well it would work for 3d files with the settings they are using. It got me thinking about Mach and wondering if we can expect to see S curve some day. More than one accel setting?

I can see how nice this would be on large routers. You would be able to have much faster feed rates and then the router would slow down where the sharp curves are.
I played with the my settings some this weekend and was able to get some pretty nice results slowing accel settings down but then you get into the problem of rounded corners ofcourse and
You also have slower accel on your rapids.

I just found it a very intresting video.

Jeff T.

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Re: Mach3 Future...S Curve and Multiple accelerations
« Reply #1 on: November 23, 2009, 06:10:20 PM »
Try the Tempest development planner that Art's working on. I've used it to cut parts on my router with very good results for 2D work. You can specify a tolerance. Set it very low, and you can get sort of a hybrid Exact Stop/CV mode. Full speed on tangent moves and no corner rounding.


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JointCAM Dovetail and Box Joint software
Re: Mach3 Future...S Curve and Multiple accelerations
« Reply #2 on: November 24, 2009, 05:32:38 AM »

Thanks for the info!!  I had a chance to play around with tempest last night and am very impressed with how
it runs on 2d work! I had a file running at 800ipm feed rate, ofcourse it only got up to that fast on the
larger straight sections but wow was it ever smooth.  I will be following its developement for sure!!

Jeff T.