Show Posts
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Where about are you in the world?
And I believe the comment doug made implied that over half the users of mach are using pirated versions so its not uncommon that the router I bought had it. And the Cam comment implied that a large percentage of problems people have had with mach has been from very expensive software that those individuals must have hack versions of or otherwise they wouldn't be running $150 software with it.
I wonder how many on this thread actually bought $16K CAM software to run their $150 CNC.
Is that really the manufactures specification? It is quite deceptive of them. Under what conditions would such a rating be true. That is about 4 hundred-thousandths of an inch. If you breath on it your likely to heat it up enough to change the reading not to mention how the reading will change as the machine itself heats and cools. A speck of dust in around 0.00002" so if the sensor or actuator is not perfectly clean then your reading will be an order of magnitude off (gasp only good to 4 ten-thousandths of an inch).
A typical mechanical switch will vary a bit in the exact position it opens and close due to several factors. The spring loaded parts inside will react slightly differently with temperature changes. The contacts also don't instantly change from open to closed (or closed to open) they 'bounce' a little so which of these bounces is Mach likely to see?
Think of the switch contacts as a resistor, when the contacts are closed you have close to zero ohms of resistance, when open the contacts have nearly infinite resistance. As the contacts start to open the resistance starts to rise every so slightly. Witch a good contact design this resistance change is fairly accurate and expensive contact probes look for this change is in resistance which provides a more repeatable indication that the switch is opening.
Guest