K2 Review, KT-3925

[tauscnc]

Hey guys,

Well I figured it would be easier to just start a new thread on my machine. I GOT IT TODAY!!!! YIPPIE.

Before we get started, I want to make sure I say the intent of this thread is to give an honest review. As many of you may know I got a KT-2525 that I returned do to workmanship.

MACHINE K2cnc.com KG-3925

I just got the machine and am at work so I can’t do much with it. However I have opened up the package and all I can say is A+ for packing. Man they really took there time getting this in the box. I asked that it be shipped apart and each piece is individually wrapped, etc. Screws are with the pieces. NICE.

This think looks HUGE! I have looked at the Y and Z axis and they look good. Again, I won’t know till tonight/tomorrow how everything runs but so far so good.

CNCRob have you gotten yours yet?

taus

[JavaDog]

[Chamm128]

Give him a break, he's at work. But there better be pics tonight!!!

[JavaDog]

Originally Posted by Chamm128 Give him a break

Ok, but just this once!

Did you order their servo/controller package too? I'm curious because it looks like they use the same servos that I bought (Clifton). I am interested in seeing what type of performance they give (and with the PSU they put together).

[tauscnc]

Man those guys holding up signs look funny. Yes, this thread without pics does lack a lot I will get pics up tonight and as the days go on.

I did not get the servo package but am going to use 180 oz/in steppers (ones from my sherline mill) and I think it will run nicely. I am really thinking of getting these 270 oz steppers (http://www.homeshopcnc.com/page3.html) but I will see. Then I can put the other steppers back on my sherline. I will be using max voltage for the steppers and gecko drives.

So far things look good. I think I might have to open up the mount for the Y-axis that hold the mount for the ballscrew (man K2 really needs to get a part list out!!!!). I find when it is a little loose it is very smooth to move but when I tightned up the screws there is more resistance and the ballscrew sound a little rough. The linear bearings are awesome!

This is my first machine with ballscrews, linear bearings, anti-backlash screws, etc.

I will put it together tonight (heck I might even skip dinner) and get it running!

YIPPIE!

taus
www.cuttingedgecnc.com

[CNCRob]

I have not received mine yet, but on the ups tracking page it says out for delivery. Its usually around 7:00pm before they get to our house. Glad to see you got yours.

[CNCRob]

I finally got my KT-3925 CNC machine. Actually it came just 4 mins after my last post. I think it's a really nice machine so far. But all I have had the chance to do is start unpacking everything. It was very well packed by the way. The real test will be when I get it put together and try it out. I went out and bought a work bench to put it on tonight. I posted a few photos of what it looked like this afternoon. I should be able to post some better ones of it put together soon.

[tauscnc]

Hey CNCRob,

That is great news!! I am also putting mine together as I had them ship it unassembled. Very nice so far. I do find some backlash in the Nook ballscrews. Still putting it together.

will get pics up tonight.

taus

[tauscnc]

IT's ALIVE!!

I will write more about it soon but here are some pics. Mine has 2 extra cross braces that I had ordered with the Kt 2525 that they let me just keep. One is a bit short and I will put a shim on it.





(this is great, I can add photos! Thanks Paul for such a great site!)

hehee
Ummm like what do you wanna cut?

Man this thing is HUGE!

taus

[JavaDog]

CNCRob, can you do me a big favor? Could you take some close up internal pictures of the PSU/Control Box? I am going to be using the same transformer that they use, and I just want to see how they did it. I'm also interested in where they got that nice AC input block with the switch.

If it isn't too much trouble.

tauscnc: Looks great! No tolerance issues on this one? Can't wait until you get this dialed in, curious to see how the accuracy is. Congrats!

I see you are using the same transformer from MJPA too, and wiring it in series like me.

[tauscnc]

Hey JavaDog,

Yeah, it is the same MJPA transformer. What I don't know is if you wire transformers in series do you cut the amps then? I am thinking of mounting the Geckos on the axis to keep the wire motors very short but am concerned about the dust and dirt getting into them. I could also just build a box like the one CNCRob got. I think if K2 routed the box with X Y Z and their name that would of looked really cool Heck, he can just route it himself now. If I make one I am thinking of making it with the clear polycarbonate sheets. I will have to see.

My biggest concern is making a new table for it, getting an enclosure made, mostly KEEPING this thing and the basement clean. Somehow I see chips of material ending up all over the house.

I will try to cut something today. I notice the X axis needs to be tightened (the end nuts need to be tightened). I think I also need to tweak the mount that mounts to the X and Y ballscrews. The Z axis seems dead on but I have not measured it yet.

I need to figure out how many steps I need for 1 mm movement (Gecko microstepping)... any ideas before I start throwing numbers out?








thanks!
taus

[tauscnc]

How do I make the photos thumbnailed?

thanks
taus