Big CNC - Out Of Order

Hey @BigCNCers and @CNCtechs,

The big CNC is currently out of order and should not be used.

The fuse has blown in the plug for the extraction unit, leaving the plug bulged and yellowed from the heat. I forgot to cut the plug off but could someone please do so when in the workshop next?

Separately, the previous user had changed the Z-offset above material to 5mm, meaning while running my first job, the spindle crashed into one of the workholding clamps I was using. The offset is meant to be set at >20mm as standard, and I hadn’t encountered this before in the inductions. It’d be appreciated if inductors could include this check as standard in future inductions, as a £40 bit snapped and is now unusable.

After a conversation with @James_Nahajski and some internet sleuthing, I found this could be changed by clicking on the Set… Button on the top right corner of the Vectric design page, then setting the variable in the appropriate box on the bottom right corner of the menu brought up.

Cheers,
Pete

Thank you for the write up. It is unfortunate that your bit was lost in that accident. We don’t usually brief people at all on this setting so it stays in standard.

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It was one of SLMSs bits unfortunately! I’ll have a look at getting a replacement ordered for it tomorrow though.

Nw fella, I’m in tomorrow I’ll take a look at the fuse if no one gets to it before

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Actually @stefanoromano @danielbenton or anyone who’s comfortable with it, is anyone able to take a look today? The extraction really needs to be wired into the woodshop dust extraction the plug was only a temporary measure.
I haven’t wired anything into that console before and would appreciate a bit of support by someone who’s wired into it before

It’s in the to do list: we need a 12V DC for the little fan on the box and I think an air intake hole would help… right now air circulation is passive can you please make sign to check that the box door is open?

I’ll check about the box door tomorrow Dario.

I appreciate there’s a lot of moving parts to this Lathe move but with the CNC currently out of action it would be great if it could be bumped up the list so we can get it running again. If anyone is in tomorrow morning to help me with this it would be really appreciated.

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Just had a chat with @James_Nahajski about the melted plug.

This was due to poor fuse installation and possibly due to a poor-quality fuse.

As you can see, the contact area of the fuse was really minimal, which led to overheating.

(also the neutral cable being pinched is not great practice)

If the extractor has a power rating of 2800W (2.8KW) or BELOW, then it can be used on a 3 pin plug all day long (provided that the plug is installed correctly).

Thanks for looking at this Stefano. That was my poor work to be honest, it was a long faffy day I should’ve checked that nothing got nudged up after wiring.
I can resolve tomorrow

Oh, sorry mate! I didn’t know that you did it!

But yeah, I reckon that was the main issue :face_with_open_eyes_and_hand_over_mouth:

Also, I am not sure where you got that fuse, or if it was already in the plug, but I don’t recognise it as a BS standard one.

For the sake of a few pennies, it’s worth putting a proper one in.

(something like this)

No problems mate, as you may have heard it was a bit of mental day with the fireball coming out of the old extractor, we were short on time so found an unused plug in electronics area with a fuse already in it I believe.

If you guys don’t have time today I’ll pick up some more plugs and fuses for the space and use a proper one until it can be properly wired into the woodshop dust extraction.

If you could can you check the green extractor is 2800W or below?

Hey @petermakesprints, which bit was it that broke?

Just got this

A good quality heavy-duty plug will take that load no problem.

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We have everything we need already to sort any plug out, including heavy plugs. I’ll try to be in soon.

Got confirmation from CNC techs that the vent it’s 230V and was connected directly… it does not need 12DC. I’m around in the afternoon too, planning to make extra inlay holes.

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It was the Trend 12.7mm diameter straight flute end mill.

another thing I noticed is all three motors were switched on. Not sure if all three should be switched on. The only thing I am basing this off of is when i switched both on on the old one, it burned out.

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Hi all,

I’ve reconnected everything. The vent and extraction are now linked to the CNC switch (same setup as before) and the box now has inlet holes (an improvement from before).

:warning: Please do not change the power settings on the green extraction (only a motor on). With three motors is extremely powerful and the existing CNC cable likely cannot sustain it. This is unrelated to the move for the new lathe. Unless approved by an electrician, the green extraction should run on only one motor.

@Christian : I’ve left the “Out of Order” sign in place; up to you if you’d like to remove it.

Thank you.

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@lamacchiacosta had a look too and the new green extraction requires all cables and breakers to be 32A…

What about the info sheet on it? Stefano took a photo of it earlier