Proxxon Mill Best Practices Question

[Jack Sparrow]

Does anyone know where to get an edgefinder that fits the Proxxon MF70's chuck? Max part diameter is 3.2 mm.

 

[Jack Sparrow]

I use an edge finder mounted in the chuck of the mill. There are cylindrical types and also a needle tipped version called an edge finder- very simple to use and not expensive.

Hello,
Could you send me a link to where you purchased the edge finder that fits the MF70 chuck?

 

[Alan Smith]

Could you send me a link to where you purchased the edge finder that fits the MF70 chuck?

You got me there, Most of them have 10mm shanks.

 

[Captain Cambo]

Awesome thread. I have my mill setup as a CNC machine, but that doesn't mean my cuts are more accurate. I don't know what I am doing with this mill, and quite frankly I am scared to use it. I even purchased an extra XY table in case I make a mistake. Thank you for the sharing of information.

The CNC approach allows for auto homing so that 0,0 is always at the same place, but I am not there yet because I don't have limit switches installed on the mill. That is where I am at. But the mini vice must be oriented properly so that it's sides are in alignment with the X and Y axes. For the z axis, I use a sheet of paper to adjust the 0.

As they say before you automate a process you must be able to run the process manually first so I am building this process incrementally. Once again thank you for sharing your information.

​

CNC Pfft.

 

[Jack Sparrow]

not sure what Pfft means. sorry

 

[Jack Sparrow]

Paul, What I use is my Starrett Last Word Indicator. Mount on the spindle and traverse the x-y axis
A little pricey for some but well worth it. It's smaller than most dial indicators

Depending on the vertical clearance on your mill there may not be sufficient clearance and it may require a different mount location other than the spindle. Works great on my mini mill. If you can mount it on the spindle you will have to 'lock' the spindle so it doesn't rotate.
View attachment 462835

Hello, so I assume the idea is that the indicator always stays at the same value as you move along the Xaxis, say?

 

[Roger Pellett]

That’s right. Most dial indicators have a movable dial. Once your indicator is pressing against your chosen surface, you can move the dial around to Zero and lock it. If the surface is properly aligned it will continue to read Zero.

Roger

 

[Jack Sparrow]

i purchased a dial indicator and magnetic base for it. I could not find an edge finder that fits the chuck. Maybe I am not looking in the right place, I don't know...