[katran]

Uh ... so , what is the big fuss with this test ? If it is that important , I will do it ...no problem .

It will absolutely deflect in some way , no question about it ... Maybe the column , or the spindle head ...

I don't give a rat's ass about the actual result , does not matter to me .

[Fastest1]

Katran,

Your build is great. The results of the requested tests are more out of curiousity. Having seen it done on a few machines I am familiar with, it would be interesting to see the differences. I cant imagine the test creating any issues on the machine, taking much time or special equipment. Just a few minutes of your time and a little patience. I learn so much more by seeing and doing than reading and trying to comprehend formulas, loads and stresses. I wont be offended either way.

Uh ... so , what is the big fuss with this test ? If it is that important , I will do it ...no problem .

It will absolutely deflect in some way , no question about it ... Maybe the column , or the spindle head ...

I don't give a rat's ass about the actual result , does not matter to me .

[louieatienza]

Katran,

Your build is great. The results of the requested tests are more out of curiousity. Having seen it done on a few machines I am familiar with, it would be interesting to see the differences. I cant imagine the test creating any issues on the machine, taking much time or special equipment. Just a few minutes of your time and a little patience. I learn so much more by seeing and doing than reading and trying to comprehend formulas, loads and stresses. I wont be offended either way.

LOL I have to agree that this fascination with a deflection test is a bit weird. If the man doesn't want to waste what little free time he has with minutia such as a "simple deflection test" so be it. Besides, with that beast of a spindle, anything that gets in its way will be decimated long before any "deflection" shows up!

So if Katran is kind enough to take away from his leisure to humor people with a probably insignificant [to him at least] test then so be it.

[katran]

Initial build/mokup it's about done ... All axis perform well , no glitches ...yet .
I still need to organize cables , find a better spot for the computer ...

The big problem now is protection . I need to cover the rails and screws
with some sort of way covers ... Any hints ?

Also , a new movie ... I'm no film maker , so please be gentle ...

P.S .

third part of movie shows rapids at 6000mm/min . I think I can go
to 8000 , but I'm afraid ...

P.P.S .

Can anyone explain to me how to make that deflection test ? Thanks .



................

[siam]

I just started reading this thread today, so my appologies for my late comments.

Like everyone else has already noted, your workmanship is superb!!! Having just completed a slightly smaller CNC build-from-scratch mill myself, I can appreciate the time and effort you've put into this project. It's great work !!!

I also wanted to say "Thank You !!!" for the work you do on your "day job" as an air traffic controler. I'm a private pilot myself and I'm deeply appreciative of the work you guys in the tower do every day, 24-7, there's no way I could handle that kind of stress. My hats off to you :wave:

:cheers:
Mike

[siam]

I use four pieces of cloth to cover the X screw and ways on my CNC mill; it's far from the prettiest solution you can come up with, but is quite functional.

I used the cloth from an old pair of blue jeans (OK, they were actualy an off-white in color, not blue). I attached the cloth covers with small pieces of flat plastic which is screwed onto the sadle and table ends, there-by making replacing the covers very quick and easy. I slide a few pieces of round steel rod into the seams at the bottom of the covers to add a little weight to pull the covers tight while the table moves in X & Y dirrections. A seperate piece of cloth is attatched at one end to the bottom of the Z "saddle" while the other end is attached to the back side of the Y "saddle" (I used the cloth from old Chinese wall hanging I had, note the green dragon's back in pic below). The cover on the left side was removed when this pic was taken, but it's identical to the cover on the right side.

So far, this arrangement has worked well for me. My biggest problem is cleaning off all the little metal chips from the cloth's surface, as a few chips always seem to get stuck in the fabric. I think a fabric with a tighter weave and smoother surface may work better than the denim I'm currently using.

:cheers:
Mike