Messages

1

General Mach Discussion / Re: Simple question: Z-Axis and the Feed rate

« on: February 25, 2007, 08:33:35 PM »

OK, I found the motor Tuning area. Thought that would be something entirely different. Reading....

thanks!

2

General Mach Discussion / Re: Simple question: Z-Axis and the Feed rate

« on: February 25, 2007, 03:04:13 PM »

Is there a way to set a maximum 'speed' for an axis? I.e. I'd like to set it up where no matter what my g-code tells the controller, the Z-axis will only go up to a certain speed? Been reading the Mach3 document and haven't found anything like that...yet.

Thanks!

3

General Mach Discussion / Re: Simple question: Z-Axis and the Feed rate

« on: February 23, 2007, 11:32:05 AM »

Now I just use feed hold (Space bar). Before I was hitting Stop (Alt-s). Using Stop, it would continue from where it left off, but it would be going at Mach3. (Pardon the pun)

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General Mach Discussion / Re: Simple question: Z-Axis and the Feed rate

« on: February 23, 2007, 10:24:07 AM »

Not sure how to look that up. i have figured out that it will move that slow. I think I have an issue with the actual CNC controller here. If I stop the run and then restart it, it invariably will snap off my bit. Just learned to setup more properly so I don't have to stop for adjustments.

5

General Mach Discussion / Simple question: Z-Axis and the Feed rate

« on: February 15, 2007, 12:14:40 PM »

If I set the Z-axis feed rate to less then 1In Per minute, I.e. trying for 1/2" (F0.50)to go r e a l l y slow, either my servo controller or Mach3 isn't interpreting it correctly and it goes faster then a bullet. I darn near blew the servo on the Z-axis due to this. 1In per min is just a wee bit to fast when your using 1/16 and smaller end mills.

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General Mach Discussion / Re: 'Mill dust' and breaking bits... Advice please...

« on: February 09, 2007, 02:36:24 PM »

Thanks Chad... Still debating whether or not to get one at all. Been having decent luck with just plain ole WD40 and a shop vac. (Redneck CNC milling!) Allot of my issue was also due to feed rate, I've taken to r-e-a-l-l-y slow milling. It is a bit frustrating to do so, but the success rate compared to before is significant. Trial and (expensive) error at this point. I also am piddling with using a larger bit, and using offsets. Marginal success here as the stuff I'm mill is pretty darn small. Using a 1/8th bit I'm getting decent result with the exception of (the obvious) over lap in the width of the cut. Ordered some more 1/16th bits, as my last one went to that great machine shop in the sky....

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General Mach Discussion / Re: Still breaking bits... Jump start from a mid run stop...

« on: February 07, 2007, 07:37:30 AM »

Hrmmm...

I see that now, ok, downloading. Thanks gents.

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General Mach Discussion / Re: Still breaking bits... Jump start from a mid run stop...

« on: February 07, 2007, 01:00:46 AM »

Mach3 R1.84.001, just downloaded it couple weeks ago to make sure I had the latest

9

General Mach Discussion / Still breaking bits... Jump start from a mid run stop...

« on: February 06, 2007, 10:24:06 PM »

I'm using very small diameter bits (1/16 and smaller) to cut out my widgets with. So far I've snapped off about $50 bucks worth. Lubrication helped allot, slowing down the feed rate helped... but... If I stop the run, and then restart it, it goes into over drive. I had it happen with a 1/8th bit and it actually survived something like a 50in per min rate when it jumped. Of course, the aluminum I was cutting looked like it had been ripped apart, not milled. When this happens with the smaller bits, *poink* more money down the drain. Is this a bug in the software? Anyone else run across this?

10

General Mach Discussion / Re: 'Mill dust' and breaking bits... Advice please...

« on: February 04, 2007, 12:57:39 PM »

Already out there snooping on eBay for a coolant system. I found the Bljur system out there, but I think that was is a little over kill for my little mill.

My fist mill was the Harbor freight Micro mill. I absolutely love that thing and have made oodles of gizmo's with it. A fella out on eBay is using the Harbor Freight mill as the base for a full blow 4 Axis CNC mill, so, I bought one of those.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=12584&item=220068969126

So far I really like it!!

Going to make a CNC router one day.... one day.
hehe