Very fine thread M10 grub screws

[Voicecoil]

I'm talking to a manufacturer who makes these things about getting some M10x0.75x12mm flat end grub screws to be used in tramming/tweaking on my machine - just wondered if anyone else might be interested in some?

[m_c]

If they're only for alignment purposes, standard M4 or M5 will do the job just as well, and be far cheaper.

Or an original fine adjusting tool would be even cheaper, provided you know how to give things just a gentle tap.

[Voicecoil]

I was thinking of these for a situation where you're clamping down on the axis of the adjuster (e.g. like the Z-axis alignment on @routercnc's machine, obviously clamping down a number of M8's working on a little M4 adjuster might shift it.

[mekanik]

https://www.spaldingfasteners.co.uk/thread-data/
There's an M10 superfine in that list
Regards
Mike

[Snapper]

You can’t beat a Thor hammer for getting things square.

[John McNamara]

Hi

If you are going to set a machine up using jack screws the frame members will end up only touching at a few points, while this may achieve good frame geometry and depending on the fasteners and jack screws used if they are big enough, sufficient static load strength of the frame.

However machines with rotating components and moving frame elements will also impose dynamic loads and vibration, vibration in particular has to be damped out by the mass of the machine and maybe vibration damping elements.

Any fixed joint gaps left after jacking machine members into alignment need to be filled. Metal filled epoxy is used my many modern machine builders to do this.

Eberhard Bambergs excellent paper on Precision machine design, and in particular vibration is well worth reading. Link Below.

http://www.mech.utah.edu/~bamberg/re...e%20Design.pdf

Regards
John