770 Installed and Cutting

[Magnum164]

Well, looking through the forums there are a lot of pics of 1100s but not many 770s. So here is mine installed and already cut the test part. Now to start getting used to some of the other options.

And yes I can access the tray on the right side, I needed the machine as far over as possible to provide room on the left to roll carts and stuff in with.

[twocik]

Nice job

Make sure you've got it level or else your coolant won't cycle.

Also don't forget to add silicone in between the metal splash guard on your Y axis (front part of your table) to protect your limit switch. Everyone here recommended it to me and saved me from dealing with that headache.


Good luck and lets see some chips !

[Magnum164]

@twocik

Thanks for the tip, I will add some silicon there. As far as being level, it's not at the moment or at least it's about .045 off so I am waiting for the tools I need to get it leveled and aligned good. It was obvious from the test PCNC cut that it was out of wack big time.

[twocik]

What did you cut look like (any pics) ?

[Magnum164]

What did you cut look like (any pics) ?

I'll post some pics tonight. test cut looked fine, but was in wood. Only thing noticeable was the outline cut was not square. The rectangle was larger on one side than the other but I have been trying to make sure the PCNC test cut was not meant to be that way, which I don't think it was. Outline was probably supposed to be square. I may do a simple box outline tonight to test. Will post pics when I get home.

[Magnum164]

Here is a pic. You can see the enlarged right side cut as well as it is not as deep.

[lwoestman]

I believe that it is supposed to be non-rectangular. It was when I did it.

[Magnum164]

I believe that it is supposed to be non-rectangular. It was when I did it.

I was going to look at the code tonight and see if I could tell, but that is what I was hoping to hear. I am just not familiar enough with nc code to tell and everyone who looks at it comments on why is it not square.

But the pocket is clean, I would expect to see uneven lines inside the pocket.

[twocik]

Make sure you tighten every bolt, screw, etc.. on the machine. Check right under the spindle nose, you'll see 4 or 5 socket head screws. Make sure these are tightened down, my were loosey goosey and did clean up a few things.

[twocik]

Check your code in CNC simulator and see if it's square or post your .nc file and I'll take a look at it...

[Magnum164]

Looks like all bolts are tight. The pattern is angled on the top so looks like the cut is fine, I have included the file.

I did a lot of tests last night and about 3" above the table I am well within .0005. It's above that and it starts changing so I am thinking the machine is probably as accurate as it will get and it is how I am trying to improvise on a vertical measuring surface. I can see where the cylindrical square is helpful as it won't flex as you move higher above the mounting point.

So for now just have to wait for some material to cut and some more accurate measuring tools come in through the mail (zilch local) to really check it.

[Magnum164]

Well found some old alum and decided to just start cutting with a rougher. Part looks halfway decent, no coolant only a slight swirl mark where it grabbed a chip looks like.