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I am not real good with motors but i can usually get it sorted but i would need to meter out the switch and work it out so sorry not a lot of help being so far away. It seems to be a 3 phase motor...

If your looking for buyer protection from Alibaba I think your doomed to failure.
I tried it once and even when the vendor agreed that they sent the wrong thing Alibaba said there was no evidence...

I have a chinese 60x40 thats been worked over. gecko 540 drive, 48v power supply, low induction motors, shielded cable from homann, Oldham couplings and 2hp water cooled spindle with 3hp vfd.
Built...

I have done something very similar buy chucking up a large diameter then facing it flat, put a step on it if you need to center it accurately then use a rotating female center in the tailstock to put...

you have a 45V AC transformer which when rectified with some smoothing caps should give a DC voltage of about 65 or a bit more. I assume the toroidals 45+45 means it has two seperate windings which...

45V rectified and smoothed will be over 65V better check what the geckos are rated for. The motors wont mind as the drive current limits.

none of the chinese buying sites have any protection for the buyer. I have been stung on aliexpress/ alibaba and no backup from ali express
buy direct from the manufacturers is a lottery.
Paypal...

for a big table i would be looking a lot more upmarket than this set
very small motors low end driver and low voltage power supply
are u using rack and pinion?
Big table like that would not be...

no problem

i am near Freo and could help, justr need the dxf.
i will pm you with my phone number

Fast good and cheap was not in the original statement, but many things are a huge amount cheaper now CNC is mature. MAny things now exist that would not have been practical nor possible before. The...

Sorry Handle but that is the funniest thing i have read for a long time

You need to turn your prejudice off and your taste buds on. I travel all over asia for the food and if you try it there is...

arcing of any sort generates huge amounts of interference and a plazma cutter is very good at it.
If it was my machine i would be pulling all the cables that are not good quality shielded types and...

it seems very strange that some get what is promised and some just end up with nothing

My problem is finding something else that is as good and still afordable

Greg
scratch him off the list then i suppose
I will not take the chance with $10k
sorry to hear of your loss and lets hope it doesn't happen to anyone else
Thanks for letting me know

Mike

Beano and Greg can u give us all any updates for your machines.

It is a huge worry sending money when others have been waiting years but i do like the look of the machines.
For those that have...

cheap pc is ez
the bob looks super ez as its just a few chips into sockets
wish all the repairs i have done were all that ez
Agree with COD need to explore the cause and that maybe the hardest...

looks like everything is on sockets so an ez fix.
The passive componets look ok from the photo

sorry i forgot that bit
I made to fit the 80mm 24k spindles
I think it is a bit too tall so it will get shortened and also the suck tube will get an elbow so it points up i think.
Maybe have to...

just need to print it out now
Hopefully it will work.
The brush will be little clumps of brush removed from a banister brush and inserted into holes drilled

348626

would love to see you do some numbers on a composite carbon sandwich.
I have built one with a 1200mm beam but have not done any bending tests on it yet
beam is 300 square and Y and Z plates have...

one thing that may be worth a try is to shift the suction pipe to the right so the exit is a tangent to the circle around the spindle.
This may get a vortex going and help with suction

I have a 6040, so same low Z, and ally was a disaster with the original setup
I have changed all electronics, Gecko 540 @ 48V, and the cables for screened type. The couplers were changed to oldham...

if you don't need the Z hight just use 16mm mdf with either a double sided tape or counter bored holes. If u cut ally you will be using metho or a petroleum based lube and mdf isnt bothered by them,...

John
If you are still around this topic i would love to get the drawings if still available.
Been on CNCZone for years but only found this by seaching for groinders on google.
Never thought to...

Maybe fine if you only turn reasonably small diameters.
Given a stepper has 200 steps per revolution and that axis thing is 6:1 so 1200 steps per rev. If your diameter is 4" that is a circumference...

Lot simpler to use the method i did.
It is 16mm endgrain balsa with 600 gram epoxy skins each side. cost about 370aud for an 1200x2400. A roll of 50K carbon tow is about 300aud a spool weighs about...

I have had it set at about 50mtr/min with very aggressive accelerations but slowed it down as it scares people :cool:
The 3D carving is the main reason I want it fast, especially for the Z.
Lots of...

People seem to think carbon is immensely stiff and strong but a small blow will make it shatter, watching too many F1 races maybe. It actually needs enough energy applied to bend it past its yield...

I have a 6040 machine and it is marginal cutting ally. I have done a lot of mods to it and it is a lot better now but i built a bigger far more rigid machine so would never use it for ally again.
To...