Hello, As I am so demotivated by my cnc because of the precision issue (a bit of history: Workbee - Circle precision). I am trying to go back to it every 6 month to fine a workaround and it was this weekend so I have a new bunch of questions. As some peoples had advice to measure the bit correctly, I have done that and I have obtain a value of 5.95 in place of the theoretical: 6mm. But I think that it isn't so easy to have a very precise measure of it. I have just use my digital caliper and turned the bit in it as in the video below: Do you have a better method? Here is the bit I am using in detail. It is a CMT Orange tool 912.060.11 The reason why I am concern by this exact measure is because I have noticed that with the following test below. The measure are not correct but when I decrease the size of my bit in Fusion 360 the accuracy of my result increase. Here are my results when I am configuring a bit of 5.95mm in fusion 360: As you can see the results with a bit of 5.75 are really better but I am pretty sure that it doesn't match the real measure of my bit. Could you explain those results? Also I have noticed that the precision of the outside measure (the 30, 60, 90) are less accurate than the inside measures. The used file are in attach. Regards, Benjamin
Cut a slot. Measure the slot. Then you know for sure that's how wide it cuts, including any other runout etc at the same time
Ah ah that was one of the most stupid trick I ever has since the startup with my cnc and it work. It was so obvious! It really helped me thank you. My slot looks 5.68mm that is a huge gap from the 6 in theory and even the 5.95 measured. As I like to understand stuffs do you have any explanation how this is possible that it is smaller than the measured one?
I do not have an explanation. (; how expensive was the calipers you measure with (; ? PS: Getting in there and making some projects will motivate you up more than chasing the microns. - nothing is ever perfect, but accepting Good enough and using the machine a bit to make cool stuff, will be a very powerful tool to change your thinking about it - change it into a joy
The digital one is at least 10€ or even more like 15€ But I must say that it match the non digital one who was a better quality tool. And also when I am measuring the slot and applying it it also improve the performance so I guess that it should be not so bad... I doesn't chasins the microns per pleasure but because it wasn't working for the purposes I want to use it. I will retest not if it work with longer movements and if yes I will be able to finaly use it I really hop so and doing fun project Thanks again for your help on it! It should be in the CNC guide for newbies and other stupid questions
