Messages

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General Mach Discussion / Re: Milled hardware don't match software preview

« on: April 09, 2009, 02:44:02 PM »

with a 60° how much space is there between the pads? now mine is 0.4 or maybe a bit less. But thats still too wide for the smd print i need to create.

Can give the nut a try but all the parts of this deckel are custom made, so it's difficult to find a part that fits my machine. Maybe I just make a new cnc, have the current one to mill the accurate parts.

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General Mach Discussion / Re: Milled hardware don't match software preview

« on: April 09, 2009, 12:36:39 PM »

thanks, been looking for new carbide engraving bits and found 0.1tip with a 10° angle, is that better than 60°?
here is an image: http://images.virtualvillage.com/007807-105/003.jpg?s=500&q=95&c=uk&z=en&f=0

I zigzag because i have backlash on my x-axis... (its a Deckel G1L where i put steppers on) gonna try to remove the backlash later, but zigzaging is my current solution
I've created a tool for this that strokes each path x-pixels or until it reaches an other path, then it only leaves a pixel between them to mill on. Here:
http://www.openservo.com/forums/viewtopic.php?t=931

Thanks Ben

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General Mach Discussion / Re: Milled hardware don't match software preview

« on: April 08, 2009, 02:41:47 PM »

Thanks for all the fast reply's

I don't really know what you mean with flex? Flexability? no, but i think its a little bit out of center, so my tool shakes a little bit. Maybe that the rough copper cutting.
The resolution is 400steps/rotation and 4mm of movement/rotation so 0.01mm, but my cnc is running on 1/8 microstepping does that increases my resolution?
The spindle rotates at 6000rpm, but i can go 15000 is that a better speed?

lot's of questions, but for the original question, either the problem is with my drivers or mach 3.

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General Mach Discussion / Re: Milled hardware don't match software preview

« on: April 08, 2009, 01:39:56 PM »

I can make a gap of 0.4mm i think, its a engraving (looks like this: http://www.2linc.com/images/New_Equipment_Digest_0803.jpg)
don't realy know what tool is the best for these kind of cnc work, its all new to me. And I have covert the coppersurface with thin. But indeed its like you say the tool rips the copper off... don't cut it nice...

But if u look at the top of the image you can see that edge is not straight. It's like the more copper is between them the longer the path is.

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General Mach Discussion / Re: Milled hardware don't match software preview

« on: April 08, 2009, 01:17:39 PM »

http://www.basicfox.com/toplayer.zip thats the G-code file, if i put it online as .tap i can't download it

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General Mach Discussion / Milled hardware don't match software preview

« on: April 08, 2009, 12:56:06 PM »

Hello,

when i mill an smd pcb the edges wich are straight on the preview arn't straight at all... here is a picture:

The milled region is 18x24mm... so it's realy small...
I use a zigzag motion to cut out the PCB because there is backlash on my X-axis. Normally the G-code file isn't the problem since the preview is ok.
Here is the g-code file:
http://www.basicfox.com/toplayer.zip

What could be the problem? I use the PICStep boards.