I've never seen a three point tram tool.
But, I am wondering if the use of a disc or plate instead of a bar with three holes and three gages would allow for simultaneously tramming of nod and tilt.
Daryl
MN
Not to threadjack, but I've been wondering why people use 2 (or 3) indicators? As I see it, a single indicator on a sturdy offset arm should be sufficient.
You are not missing anything! You have pointed out the BIG FLAW in that contraption! Why some people love that thing is beyond me! It needs to be calibrated every time you set it up! I’m very happy with using just one indicator. Marketing just loves to try and sell us new toys for our shop. A few are good ideas, but most are just a waste of money IMO.Okay, that's the part I am missing. How do you zero the two indicators to be true normal to the spindle? What is the initial plane of reference?
You are not missing anything! You have pointed out the BIG FLAW in that contraption! Why some people love that thing is beyond me! It needs to be calibrated every time you set it up! I’m very happy with using just one indicator. Marketing just loves to try and sell us new toys for our shop. A few are good ideas, but most are just a waste of money IMO.
If I understand your question? Yes, the more contraptions you have in your set-up. The more uncertainties you will have. Just keep it simple!!! The simpler the better!!! With my projects, I usually sleep on it, toss ideas around and the next day will have a simple, fast and accurate way of making. And NOT with buying any new marking toys that I don’t need, good luck, Dave.I'm a novice machinist, pre-apprentice, but I have been doing sheetmetal layout/fabrication and welding since high school (a long time). The same question still comes up when I see 2-3 devices checking for accuracy between the cutter and the product; Why? Now we're counting on all the devices in between, those that are suppose to be accurate to .0005" to provide accuracy.