Us Yanks are always amused of the Brit's busting each others balls, now here everything has to be politically correct, or is that socially acceptable? Always get that mixed up. 

'tis not so much ball busting as banter - keeps us frosty 

This text is 0.5mm high and engraved 0.05mm deep.

OK, it is not that good and would probably make a watchmaker cry if he saw it but the purpose of this (and the previous examples) was to test the accuracy of the prototype tool setter and so far, I am extremely pleased with the results.

I have taken on Stirlings suggestion of incorporating an over-travel switch (just in case) to operate a ‘limit’ input. This will involve a re-design of the PCB and the connecting cable, plug and socket will then need 4 wires instead of 3.

Something to keep me off the streets for a while. 

Tweakie.

Ooops,

A little correction to the above post - It was Terry's suggestion for the over-travel switch. 

Tweakie.

Very very nice.
Now for the Video, like to see that in action.

Using direct drive Nema23 steppers and ball screws?
Don't see any backlash issues or noticeable stair stepping effects.
But then we would start needing to get the microscope out.

Streets? Hell... I never thought you left the man cave.

Great Job, fun isn't it!!!

now if you can get that to fit and I can read it, between just two of those lines on that scale

The limit on machine engraving is approx .015" high considering that if you have no spindle run out, can get a tip point
down to .001" radius, and keeping depth at about .001". IE; letter E .003" for the engraved line and spaces between.

Yet it is interesting how they can make reference targets with line widths or spaces  is down in the microns.

Tweakie, rumor has it that YNN can't see the letters on a stop sign at 5 feet so let not your heart be troubled at .5mm.
You may want to bump the size of our pics up a bit for him. 

RICH

So True,  But truth be told that is one reason why I retired early, both my Dad and his Dad lost their sight early with retina detachment, So though funny, it does scare me. So enjoy what you do. But in the mean time I see well enough to appreciate every ones fine work. I don't mind having my balls busted either. Life is fun with all these challenges. 

On a side note, I just built my first gantry router system using servos, I see well enough to see the those digital readouts.  but I agree Rich, bump those pictures up Tweak.

Hi YNN,

You should never take anything as being inevitable - there is always chance.
A genetic inheritance may skip a generation or a genetic pattern being modified between the combination of both parental sets may resolve a possible problem. Chance is always there.

Tweakie.

I don't mind having my balls busted either.

Whatever floats your boat my man - drop yer trollies and get 'em out on the bench - Tweakie! - the lump hammer if you please...

Lump Hammer ?? surely a Ball Pein Hammer would be more appropriate 

Perhaps not - I recently spent some time in A&E after my misunderstanding of the usage for my wife's new Dyson Ball Cleaner.

Tweakie.