my build from the start

[ptjw7uk]

x=bolt spacing(centre to centre)
Peter

[m_c]

should be x/cos(whatever), as you're working out the hypotenuse from the adjacent.

[mmcp42]

fair do's
I've updated by guesswork...

[Jonathan]

should be x/cos(whatever), as you're working out the hypotenuse from the adjacent.

Yes it is, sorry ... was rushing and missed that

[h4ppy-chris]

big time backlash on the z axis so time to investigate and here's what i found.



and here's how i sorted it there was play between the bearings so skimmed 0.76mm of the end cap no more play backlash now down to 0.003

[h4ppy-chris]

well my ally turned up so made a start on the z motor plate
all i could think of when making it was, if the mill was finished i would just be watching it being cut.

[Jonathan]

well my ally turned up so made a start on the z motor plate
all i could think of when making it was, if the mill was finished i would just be watching it being cut.

Similar to how I did it except I mounted the motor plate 90 degrees clockwise to yours, and lathed a bit of 3" aluminum bar to act as a spacer and give a bit more surface area for the motor plate to bolt on to. Doing it that way enables me to use the handle for manual drilling without removing the stepper - I think yours would collide?

[h4ppy-chris]

good point jonathan, i will wait till it's all working then make a new one.

[Jonathan]

good point jonathan, i will wait till it's all working then make a new one.

Here's a couple of photos of mine, pretty self explanatory...

[h4ppy-chris]

cheers mate that's give me some think to think about.