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331  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 01:47:19 AM
By the way. Changed my code to work in degrees mode so that toolpath would display more meaningfully. See attached. It didn't occur to me previously, but this way the debugging is easier. Interestingly the toolpath produced by my code consists of almost straight lines, while yours of curved lines. So based on the fact that mine did produce flats somehow, I would assume that there is a problem with yours  Huh.

Dan
332  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 01:28:29 AM
Ah.. I see now what you mean. Cutting the shape in multiple passes. This is more powerful than my approach. And you code looks much simpler too Wink Not that I figured the math though.

Dan
333  Mach Discussion / General Mach Discussion / Re: Accuracy of Homing Devices? Pro's and Con's of Different Sensors on: October 18, 2012, 03:13:34 AM
True. Do you have a link to the Honeywell switches? What type are they and what accuracy?

Dan
334  Mach Discussion / General Mach Discussion / Re: Accuracy of Homing Devices? Pro's and Con's of Different Sensors on: October 17, 2012, 03:24:15 PM
I agree on the roller type advantages you mentioned, but every additional moving link reduces repeatability in my opinion, that's why I tried to stay away of this.

Dan
335  Mach Discussion / General Mach Discussion / Re: Accuracy of Homing Devices? Pro's and Con's of Different Sensors on: October 17, 2012, 03:16:56 PM
Thanks Hood. These are not plastic however - it's an anodized aluminium there Wink

Mounting them to trigger against an inclined surface could be used to solve the overtavel problem. But I mount them just before the hard stop.

Dan
336  Mach Discussion / General Mach Discussion / Re: Accuracy of Homing Devices? Pro's and Con's of Different Sensors on: October 17, 2012, 03:00:18 PM
Thanks.

These are single sided, Russ. First intention was making them double sided, but it interfered with the requirement of making them smallest possible and I decided to make them this way. The plunger stroke is 5mm, dimensions are 29x23x14mm. You supply anything between 5 to 15VDC and output is active low. Price is $30.

Hood, yes, they are based on the same concept. The new ones are an entirely different design (round frame with M12x1 external thread - like the industrial proximity switches) and they are single ended as well.

Dan
337  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 1997 DYNA MYTE DM4800 VMC to Mach3 Conversion on: October 17, 2012, 01:30:15 PM
Cool looking panel. Where did you get the buttons?

Dan
338  Mach Discussion / General Mach Discussion / Re: Accuracy of Homing Devices? Pro's and Con's of Different Sensors on: October 17, 2012, 01:25:14 PM
Hi,

I used to make these home switches with the integral photo sensor. Now there is a new version that will soon be available but still have some of these left if that's of interest to you. Repeatability of these is better than 0.003mm and they are fully waterproof.

Dan
339  General CNC Chat / Show"N"Tell ( Your Machines) / Re: I wanted to show my homemade CNC. on: October 17, 2012, 01:00:22 PM
Nice and well constructed machine! Good work on the signs too.

Dan
340  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 17, 2012, 12:56:46 PM
Yes, I was meaning the math behind the arc programming. Just can't figure it.

Afraid I still don't understand what you mean with the threading like flats cutting.

Very busty now. Will check what happens if I enter 2 flats in a couple of days.

Dan
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