New build with recycled parts on a ridiculous budget 120cm*60cm work area

[Nr1madman]

Haha :D what are you planning on clamping there Mr crazy-clamp? ;)

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[Nickhofen]

Nice...clamp clamp!!

[Desertboy]

Haha :D what are you planning on clamping there Mr crazy-clamp? ;)

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My first clamp I made was aluminium extrusion and it flexed when I ran the machine over 2m/min when cutting so I went a little OTT with box section steel and toggle clamps lol.

They're <£1 a clamp that's why I went so OTT, you only need 4 per part, gives me a clamping range of 15mm-28mm thickness, need to put holes in the end metal plates yet so I can use T bolts to attach and adjust the clamp. Going to use 2 per plate so 4 per "clamp for 8 T bolts in total. Wing nuts for tool free adjustment and speed.

There's 28 clamps on this cost ~£32 to build I had the box section, the annoying bit was drilling and tapping 112 holes to fir the clamps, box section is 3mm wall thickness. At the moment everything I want to work on is 20-25mm thick although I might make another one to do thinner material, need access to a steel milling machine for that.

You'll see I already lost one the rubber clamp bits will need to put a new one on, if you use these You should do what I intend to do and drop a nylox nut on instead of the normal one so it won't come loose.

[Desertboy]

Works really well only need 4 clamps per part so lot's of redundancy.

[Desertboy]

I had to move the machine which meant rewiring so I took the opportunity to replace the linuxcnc with a DDSCV



Going to add a stop and start button.

I have a stainless steel controller box I recovered for free but needed to make a new mounting plate.

[f750]

I have built a machine following this and the Joe Harris build. I am using the same BOB and having read all the way though my question is, I am using a dual ball screws and could you confirm the wiring on the inputs for the limit switches.

Cheers Tony

[Desertboy]

I have built a machine following this and the Joe Harris build. I am using the same BOB and having read all the way though my question is, I am using a dual ball screws and could you confirm the wiring on the inputs for the limit switches.

Cheers Tony

I'm going to assume you want to use the limit switches as home as well.

What software are you using on the computer?

Do you want to dual home the gantry?

How many home switches do you have?

On that 5 axis BOB I have P12, P13 & P15 you would normally use for X, Y & Z limits in linuxcnc or Mach 3 you can also assign these pins in software so what matters is you're wiring matches how you assigned the pins.

If you want dual homing you can share the input as long as it's not the same axis. Needs to be set in software. You can also use the p11 tool setting as another axis.

Good good you were following Joe's Build too lol, I'm kind of the Benny Hill of mycncuk lol but with worse music and uglier women ;)

[f750]

Cheers for the reply,I am using Mach3 as my software and have the machine working on it. I am at the stage of fitting the limit switches, I want to do dual homing on the gantry and keep the tool setting function.