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Hi peteeng,
yep, they look like a cost effective way to do things.

Craig

Hi,
another thing you will need, and its not something you have to buy, is some spoil boards.

I have a couple. They are just a squares of acrylic. They get pretty scarred up after a while so...

Hi,
time and time and time again I reach for my Mityutoyo calipers. I couldn't possibly count the number of times I've used them over the twenty years I've had this set....

I have a set of...

Hi,
bigger is better. The first moment of area is very dependent (to the square? or maybe the cube?) on the outer dimensions. Increasing the size will easily make the structure stiffer even without...

Hi, Peters both,
they are good ideas.

I set up the oscillating pump I already have on hand and ran my spindle with it over the weekend. The flow rate I measured was about 800ml/min. I found that...

Hi,
if that improves the stiffness then yes that is a good move.

You need to strike some kind of balance. In a gantry machine it is usually the gantry closely followed by the Z axis that give the...

Hi,
the thickest RHS and SHS sections I've seen listed are 16mm. They are not common. New Zealand steel suppliers do list them but on indent from overseas.
No idea how much you'd have to order to...

Hi,
I've used Mach4 and an Ethernet SmoothStepper for nine years and Mach3 prior to that. To say I am biased to Mach is an understatement.

NCStudio is a lesser known and lesser supported...

Hi,



Why???? It adds mass and not much else. In order for the filler material to participate in the load sharing it must adhere perfectly to the inside of the tube, something that concrete will...

Hi,
I rather think I've made a mistake......I've made one once before and I swore I'd never do it again!!!

The oscillating pump pictured above is 14 l/min......but I have reason to doubt that. ...

Hi,
steel is 205GPa while even good concrete is only 50GPa.

What makes you think that filling a rigid tube with concrete, which might as well be as stiff as a limp noodle, and have it be a great...

Hi,
flexure is the death knell for any metal cutting machine.

Even with a small cut the tool tooth has to be held against the surface with sufficient force to cause a chip form. It does not...

Hi,



That is almost exactly what I said from the beginning.

I suspect the PWM output of the servo drive is 10.7kHz, or maybe some multiple of it. The cycle rate of the control loop has...

Hi,
to be honest I think a fly cutter of 350mm is going to cause your machine to flex uncontrollably.

Just to be clear......you are cutting steel ....correct? That is if I'm reading your first...

Hi,



But exactly what are they? As far as I can see they are all marketing hype rather than anything substantial. Smaller motors and drives....so what?.....faster response and settling...

Hi,



I use Delta B2 servos, and the real question is 'why not'. Sure the B3 is newer, and while its competitively priced it is still more than a B2. Is there anything that a B3 can do that a B2...

Hi,
I have used Mach4 and an Ethernet Smoothstepper for about nine years and Mach3 prior to that.

Mach3 is obsolete to my way of thinking......NFS (the manufacturer of Mach) has ceased all...

Hi,
the cycle time may be 3.1kHz, that is to say the PWM gets calculated afresh at 3.1kHz, but the PWM tick rate is much MUCH faster than that, more likely 20kHz.



I am coming to the same...

Hi,
to be honest the recommended chip load and so on for the face mill is just not useful at the moment.

Your machine is going to be rigidity limited, and the cutting forces and thereby the...

Hi,
found a local company to sell me an oscillating pump. Up to 55psi and 14l/min. I suspect and hope that at say 15psi I'll get 5l/min. The pump itself is industrially rated, and for my application...

Hi,
I have got my new Delta VFD this morning from the US, its a second hand 11kw unit. I paid as much for it as I would have a new 5.5kW unit....so I thought why not?. If I ever get an even bigger...

Hi peteeng,
that diagram looks incomplete?? I'd swear that the diagram show the outer ring gear, the strain gear and the output bearing ........but where is the wave generator?

It's common that...

Hi,
just whipped around the corner and bought the new 20A three phase D curve breaker, 20A three phase plus neutral isolator/socket/box.....bloody hell.....hope not to have to buy any more soon!!!...

Hi,
just as a sanity check imagine a fifth axis platter with 1 arc min lash. At 100mm radius (from the centre of rotation) 1 arc min of lash translates to 0.029mm linear lash
at 100mm.....and that...

Hi,
very wise to test them out, I suspect that 10 arc min lash will put you off. There are better brands but the cost goes up bigtime.

The two gear reducers I have used for my trunnion and fifth...

Hi,



You are 100% correct. Most breakers and fuses are effective inn high current fault situations but poor in mild overload conditions. 99% of our electrical system and all our appliances are...

Hi peteeng,
looks entirely reasonable.

You might be set back a little when you realise the lash of a 5:1 or a 10:1 planetary gearbox.

Most single stage (5:1) Chinese made ones have a lash of...

Hi,
well some Googling and there certainly are three phase RCD's. There seem to be two common types, one that trips at 30mA and another at 300mA.

I would assume that the 30mA version is intended...

Hi,
well it just seems that Americans blatantly and obviously break their own laws, and then BS and bluster to get out of it....it makes you wonder whether you should pay
any credence to their...

Hi,
the 20A breaker is supposed to protect the house wiring....not your machine. If you want various sections of your machine protected then you should put electrohydraulic breakers IN your machine...