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Hi,
I went down the road of building my 4th axis for the cnc with a ER32 collet end that I can also fit a 3 or 4 jaw chuck onto and went one step further and made a stand alone indexer controller...

So scrap of paper calcs.
3KW at 24000RPM, gives 1.19Nm of torque. I just used the second calc down on this page - https://planetcalc.com/1908/ , as I can never remember the full formula! Other...

I think I've probably looked at 4th axis more than most on here, but still never got around to making one.
For woodworking, you do have the benefit that you won't need quite as much holding torque...

Congratulations on completing the build and doing your surfacing. Dean is right about the feed and speeds. I surfaced mine at 15000 rpm and 3000 mm/min at 0.7mm doc and it was fine using 1.25 inch...

Looking good Robert and turn up the wick 1500mm/min is still way to slow double that and then some. You've Plenty of Oh-shite buttons so you'll be ok.:smiley_simmons:

BZP is a good choice. Mild steel and stainless react


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Yes that would do and it does need to be metal you would also need to put a couple of fans in it as well. You can get 24V fans and run them from the 24v ps or if you have them you could use two 12v...

My box is 600 square and I wish I'd gone a bit bigger, I can however still put stuff on the door. Advice is get as big a box as you can fit, its much easier to have too much space than not enough,...

You will regret it if you try and fit it in a pc tower. And like Neale I made the mistake of too small a box.

Sorry - didn't mean to confuse but you said CSMIO first! :smile:

Yes, good choice of motion controller. Ignore the few posts talking about Mach3/CSMIO issues as you won't need to deal with these...

Ok don't get yourself in a flap its a bit like having to lean a foreign language you pick a few words up but they don't make sense.

Tramming is just adjusting the spindle so that is perpendicular...

Clive is correct that you want toroidal transformer around 70Vdc but don't go buying one as they are expensive and often don't have the required current so need two.
We or I can talk you thru...

So true! JoeHarris I dread to think what I've spent on tools. I have kept the receipts for everything so one day I will total the costs. For example, just bought one of the Pro-Tram units to tram the...

With the CSMIO-IP/M, I suggest NPN N/C proximity sensors. I'm in the middle of setting up these on my own machine, and they seem to work well. I've actually chosen to use two sensors per axis as it...

You will be fine with the 24VDC Din rail. PS.
But not for the 80V one, that would be best with a toroidal type that is putting out about 68V DC

Re the sensors you can use the switches as...

Yes make the plate just little longer than needed so can get some bolts on back side. This is Cad of machine just built using the same setup not got any pics of real thing but can take some tomorrow...

On the subject of detail and having just been working on this bit - I would change your gantry end plates a bit. I had almost that exact design at one stage but changed it to an end plate and a...

Hi Robert,

Welcome to the forum, could have sworn I typed a reply to you a couple of days ago but obviously not!! Anyway, have seen the model of your router design, and commented I think, good...