I have also a question ... Does anyone using a KISS CUT module ?

By the way which is thw way to connect a tool legth sensor to the OX CNC ?

 

I mean tool length sensor ... something similar to the one I attached to the reply

 

Which one is compatible ?

 

My first cut on my Ooznest OX machine . Machine is a double belted 1000mm x 1000mm OX with a Ethernet Smooth Stepper/C62 BoB and the MDF board is 660mm x 95mm x 19mm with the cut out being 5mm deep. This was done with a 1/8" wood bit with 2.5mm passes with a total cut time was 35 minutes.

 

Nice first cut

I too am using Mach3 with ESS, Just double belting now.
I manage 3mm depth cuts (3.175 Spiral up/down compression bit) @3600mm /min easily

 

would the following be suitable for use with the OX, i'm using mach 3

400W Spindle Motor ER11 & Mach3 PWM Speed Controller & Mount Engraving Kit CNC: Amazon.co.uk: Business, Industry & Science

 

Thanks ... I ran this with 10000rpm on the spindle and 500mm, 3600mm seems crazy fast be me lol, Tho TBH not sure what my OX could handle, I'll start pushing it more as I get comfortable using the machine.

 

At that spindle Speed do not go much faster in mm/min.
Running the 3mm cutter at 24000rpm, any slower than 3600mm/min would burn the mdf

 

Thanks for the tip, I had the previous owner help me with these starting feed rates. Figured I'd start slow and then experiment with fast spindle/feed rates. It's for a hobby so i'm not all that concerned with the speed of the cuts (tho i'm guessing the slower the cut the more wear on the bit)

 

PC

Starting slow is normally the best way.
Do be careful though. The most efficient use of cutters depends on fulfilling their Chip rate. The chips take away some of the heat from the cutter. If your cutter is hot after cutting - speed up!! Doesnt sound natural does it!!
If the cutter is warm - you are about right.

This is the maths if you want to be precise...
ChipLoad x CutterDiameter x NumberOfFlutes x SpindleSpeed = FeedRate
Any of spindle speed and feedrate can now be calculated

FYI - most of my cutters are about 0.2 Chipload

If the feedrate is too high for you - reduce the spindlespeed

 

After many life delays, I've finally got the Ooznest 1500x1500 machine fully built, mounted to wall and trying to surface my spoil board. I am now running into a problem that I am at wits end to figure out, and seems to happen sporadically, but always when I really want to do something. If I am connected to the CNC xPro (v2 I believe w/ fast decay) and have my spindle (1.5KW air on a VFD) off, I can jog and run the program in Universal gCode Sender without a problem. As soon as I turn the spindle on, I lose visibility to the xPro. The spindle is not being controlled by the xPro at all, just via the VFD. I can see the TX/RX LEDs on the xPro are pulsing merrily when the spindle is off, but as soon as I hit the run button, those pulses get weaker as the spindle spins up to speed, stopping the flashing when the spindle gets to about 9000rpm or so on its way to whatever is the ultimate speed. I am directly connected to the xPro with the USB cable.

Any ideas?

 

How close is you VFD to your xPro? also are you using shielded cable for your data lines to your motors? To me it sounds like VFD putting noise on your lines causing the controller to stop working. I personally have my VFD at the other side of the room from my controller box.

 

The VFD is mounted to the wall about 3 feet above the table, 2 feet back from the far end of the Y-axis. The line from the VFD to the spindle is not inside the energy chain that houses all of the other stuff from the xPro power supply or motors (which are all stock that came with the Ooznest Ox). I haven't yet gotten the Spindle power line hung above and will be doing that today to see if it changes anything. In a test I have tried moving the spindle all the way to the far end of the X-axis (as far away from the xPro as possible, 1.2 or so meters away) and that didn't produce anything different. The strange thing is that every once in a while it works, I just can't count on it.

Couple of pics of my installation. 1500x1500 table.

0319172357a by NLucier posted May 19, 2017 at 8:08 AM

0319172357 by NLucier posted May 19, 2017 at 8:08 AM

0319172355 by NLucier posted May 19, 2017 at 8:08 AM

 

Are you using a shielded cable from VFD to spindle (with the shielding grounded to the VFD)? To me to sounds like interference somewhere as its relative to the spindle speed.

 

Build looks great BTW

 

A++++ Customer service man, If i didn't end up getting a second hand unit I would have definitely ordered from you. I make sure to mention Ooznest and point them to the website to everybody looking for a hobby CNC . Got a link for those ferrite beads? I wouldn't mind getting some for my machine.

 

Hi Ryan, yeah my order would have been before shipping those. I also had to do the fast decay on my controller which I think is standard now. I would love a set of what is being shipped standard now for interference prevention. I'm also looking into how I have my VFD cabling installed but anything to help clear it up is a bonus. My wife has plans for me and my toy now that we are able to spend some time on it.

Thanks!

 

The customer service that I saw from Ooznest before I purchased mine was the main reason that, even though I live in the USA, I ordered from the UK.

 

Finished building my Ox, it's 1500 X 1000

Have a problem with the left motor. All other motors seem solid, they are fairly hard to turn manually, the left hand motor turns very easy.

The ox judders on the left hand side, have tried tightening the belt but this makes no difference.

Is the left hand motor supposed to run free?

 

Here is a video showing the ox returning to zero

 

Followup after replacing my 14awg non-shielded spindle cable with an 18awg shielded cable. SUCCESS! I have full control over my spindle location no matter where it is on the table. Even though plenty of calculators showed that the 18awg would be fine for my 1.5KW spindle, I was a little worried...until I opened the thing up to attach a ground wire inside from the connector to the chassis (seems none of the Chinese spindles have that attached and I forgot to before) and saw that the feed wires were even smaller than what I was using (I swear they were possibly 22awg). Attached the shield at the VFD end only and "Bob's Your Uncle".

Spoil board leveling commences in the morning (kinda tired and jumpy at midnight what with the router work and a newborn in the house).

THANKS for the suggestions!

 

Awesome to hear 18 AWG should be good enough, how many AMPs are going through it? I personally use 18AWG for my 800W spindle.

 

Thanks Ryan, the issue was not with the left hand motor after all. It was the right hand side where the rollers were too tight for the rail. I slackened them off and all is working as it should now.