I have been trying to figure out how best to achieve this without actually having used a CNC. I have seen a number of good solutions the first one being from this kickstarter Z probe and then the Shapeoko solution I referenced in my post on adding cool functionality to improve their machine. I thought, at the time, a static fence with endstops as well as a recess for the probe would be a great solution.
Then I saw another video referring to a probe like the Shapeoko but with a circle removed from the top to allow finding the XY corner of the workpiece irrespective of the diameter of the bit. It was $35 from china and seemed cheap and moved around in what seemed like the breeze.
While researching this solution I came across a website called “The Makers Guide” with a product called the triple edge finder($77 USD + Shipping). This solution seems like it covers everything I am looking for to accurately determine XYZ 0 on the workpiece.
You know what they say about things you find on the internet, so I am wondering if anyone on this forum has seen or used this type of product. As I think it would solve many of the issues I can see with needing a reference point that is repeatable and accurate. There are comments from 2013 - 2019 including ones by the creator as well as a blog that has posts listed from 2013 - 2017.
Because I have lots of free time, and a 3d printer, I am printing up a model that I put together to try and wrap my head around it a bit more. Then add a threaded insert, and some copper tape, I can see a bit more how it can work.
If this is a useful product I hope that the guys at Sienci Labs can get a few that us Canadians could order without the extra ‘fee’s’ when shipping something from the states.