Newbie looking at 6040 (China CNC) for polypropylene 15mm sheet

[jamesgates1000]

Looks like one of your axes isn't square

[JOGARA]

Great.

Well I am fucking done with this shit now tbh
I have wasted a good 6 months fucking around with it and problem after problem and now £150 in stock wasted.

IDK why this has come up now. It was fine before.

[JOGARA]

Just looking at some parts made prior to moving workshop and they are showing a slight wonk to one side on the same axis.
Minute compared to this 0.3-0.5mm we are now seeing.

Any ideas on how to fix the machine?

Close to calling it quits on this and going a different route. Though I would have to sell everything to afford said different route.
Anyone want to buy this machine?

[JAZZCNC]

Close to calling it quits on this and going a different route. Though I would have to sell everything to afford said different route.
Anyone want to buy this machine?

Sorry but what did you expect.? It's cheap chinese Router which was never designed to cut hard materials to any degree of precision.! Your expecting too much from it.

[magicniner]

Any ideas on how to fix the machine?

1. Identify the axis which is out of alignment
2. Identify what should put it/keep it in alignment
3. Post photos and ask for suggestions

It sounds like you've knocked it out of alignment by hammering it beyond it's capability, you may be able to hammer it back.

Anyone want to buy this machine?

It's a great idea to fix it, it's probably something that way, when asked what broken machinery is worth I always quote the Rag and Bone Man's opening gambit to children - Tuppence and a Balloon :D (I'd actually give about £50 as I could use some of the parts for a 3D printer build I'm on with ;-) )

[m_c]

There is always the bodge option.
Machine the parts so that the out of squareness matches up.

[JOGARA]

There is always the bodge option.
Machine the parts so that the out of squareness matches up.

Been thinking about doing that. Does not impact the internals of the case as we built in tolerance to the PCBs.

[Snapper]

As you know I have the same machine. I have wasted too many hours hammering the gantry back and forth, shimming it, squaring the spindle etc.

When alls said and done you have to realise this is a very entry point hobby machine that we are pushing to its limits cutting aluminium. Being made out of pieces of extruded aluminium bolted together, it moves. It moves with different atmospheric conditions, it moves under load/vibration from cutting aluminium.

In my case my gantry was skewed radially and actually by about 2mm and 1mm respectively IIRC. I've had mine in pieces more times than I care to count trying to make it as good as I can, opening up holes, retapping threads, shimming it. It never stays square for long. In the end I've given up trying to keep everything square as it's a waste of time unless you have an hour to kill every time you set the machine up, and just accept that it is what it is and it makes what it makes.

In your case you can solve the problem of your parts not matching by cutting one side the other way round, then the rhombus will match that of the other half, currently you have them opposing each other. Or you could cut them oversize initially then bolt them together and finish. The ones you've already made could be saved this way.

And in regards to the conversation about controllers, unless OMIO changed controller between my purchase and his it does allow for jogging the spindle anywhere between tool changes, I've never had a problem.