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Hi All,

Another 1 day CNC project to help get some desktop real estate back:


https://www.youtube.com/watch?v=IQYLfPIVQGU

Further to my recent RFQ on removal of a tap from a machined aluminium part, I received a couple of PMs suggesting using a chemical etchant to remove the broken tap.

Yesterday, I managed to devote...

If you are trying to weld thin steel and thick steel together you need to run the weld pool down the thick piece of metal and then quickly move across to the thin metal, back to the thick metal, down...

Neil Looking good don't forget to put the rest of the bolts in the bearing mountings:joker:

:beer:

Sounds very sweet too! Given that you are also running at around 70V it must be down to the digital AM882 stepper drivers ? - mine are DQ860MA on 1600 microsteps but still have a hint of...

Well done Neal it's always nice when it moves the first time.:thumsup:

I made a few on the 3d printer but they take quite a few hours each.:thumbdown: But since then I have made them on the mill. I have made them with various plastics and also the reconstituted rubber...

Thanks for the offer Neil but I think we have something sorted out...hopefully :)

Looking good!

The CS Labs controller was such a pleasure to work with I have to say :) so well laid out. Definitely a good choice on that one.

The whole build is coming together nicely look...

The way I do it is to use a Relay for limits. This means I can use 24V thru the switches to power the relay coil, in my case Proximity switches, which gives best immunity against noise.
The drive...

Like this 14964

Easy neil.

13 & 14 NO Contact
23 & 24 NO
33 & 34 NO
41 & 42 NC

If you want Short circuit across contacts detection then use Dual channel E-stop which means 2 x terminals on each E-stop...

I don't include Limits in E-stop Circuit any more as they are not really an Emergency situation but rather a positional error. Instead I have them Halt the control/software and Disable the drives...

Just as a heads up as it's common Gotcha.!! . . . One thing to watch for with these Controllers is you need to check your drives are using the same Step edge otherwise you'll lose a step on every...

Neil I have been thinking about it and Dean is quite correct I had forgot you will be using this in a works environment and needs to be done correct. If you had a fire the insurance might not pay...

Yep that's how I do it.!
Look at bottom din rail and on Far Left you'll see MCB's for toroidal Transformers, 24v psu, VFD along with Din terminal banks for Mains voltage.
On Far Right you'll see...

Looks right to me ?

Neil you'll need much more deflection than that.!! . . . . I had my old machine vertical in both positions and the other way is much better for access and chip clearing.

The way you have it will...

http://www.mycncuk.com/attachment.php?attachmentid=14890&stc=1Ok This has all been said before. The system I used is this http://www.westsystem.com/ss/209-extra-slow-hardener/ this is the pdf. ...

Ok well here goes lets hope this sheds some light.!!

Starting with motors and series or parallel wiring.?
This is a choice based on how you arrange the 8 wires. In your case for parallel wiring...

I've got a load of new old stock of screened 8, 6 and 4 core alarm cable if anyone needs any, it's worth about £15 a drum on the bay but I can't be asked with that, happy to help anyone out if they...

I agree pilz are nice to have but not really required at DIY level. Normal relays work just as well provided they are correctly sized.

As stated a latching circuit is easily created and standard...

I'm not going to talk you out of a Pilz style relay as I looked at those as well and was impressed. However, I will mention that a level of safety interlock can be achieved with a cheap multi (4)...

Looking at the original ad, my first impression is that it is cleverly worded.
.
There is no mention that ballscrews are fitted. But then again no mention that the machine uses the original...

For those Mach3 users who want a more automated solution; I found a macro somewhere (so I am not taking any credit for writing it).

1, you need a plate with an insulated base (if you bed is...