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Nice to see shop pictures once more .

A tip I got from a retired painter :
To stop wood from absorbing the paint and needing multiple coats , apply one thin coat of latex or emulsion paint...

Big red's alive :)
Good news indeed .

Can't wait to see the next pieces of art it'll create .

Glad to hear it's resurected . :)

Tell me , if you're running XP anyway , why the motion controller ?
I mean XP supports the parallel port right , and a chinese breakoutboard will cost less then...

amazing figures for sure . Didn't realise it was that long ago .
And indeed a good thing you added that safety !

Btw , what happend with that stepper driver that broke down .
It was the...

same here ,still watching ...

Most likely a burned capacitor in one of the boards .
These are notorious to fail .And if one starts to fail , it creates a kind of avalance effect
causing the...

Thank you for releasing the sources . I have a dedicated flash drive wheer I store them all .
That will give me something to play with , if ever I get my router finished that is .

What's the...

Eric , a little advice if you don't mind .

I need to design my gantry now .
I v'e build the base with the x-axis slides and a t-slot plate .
And I've build a z-axis .

So now I need to...

This is lovely :) .

Does your friend use brushes to apply the paint , or some other techniques like fi felt rollers or airbrush maybe .
.

I have a router related question if you don't mind...

Is it possible to change the bearings ?

Bearings are cheap , but more and more they make things in such a way that they can't be serviced anymore .
Last week it took me 6 hours and a one hour...

It sure does . Maybe some day you could take some pictures of the various stages of the painting proces .

Pat

Eric here's maybe an idea if you 're looking to design something .

I have - job related - a fair amount of rotating nut steppers .
It's a kind of computerized valve , wich jams after a while ,...

I was wondering about that little setscrew .

I 've got sbr16 rails and trucks , and if i put a truck on the rail there's noticeable play between the rail and the truck .
I thought I needed to...

Throw a few 100$ at it and you'll get something better . Sure
Throw in a few 1000$ an and you'll get something superb . Offcourse
Now ad some more 10.000$ and you can buy your own ready made cnc...

I don't know , the rods and ball bearings somehow feel more ridgid then the thompson like rails .
I've also got a few of those , so I just might give it a go . .
All sides will be surfaced and...

I'll use the C bearings offcourse that came with the hardened rods .
But the sliding block will be custom made on the mill .

Pat

Yes indeed , the top will be an aluminium t-slot plate , and the entire frame will be machined in one setup .

I think I'll go for option E for thetracks .

Pat

Nice looking machine :)

why do you use a dual leadscrew ?
With this setup you can easily put the leadscrew in the center of the sliding block

Ian , iy's true a moving x-axis with fixed gantry will make the sturdiest machine possible .
But that would reduce the workable x-axis by half and it's already quite small .

So for this one...

Yes I thought of that to in the first place but that would take away the ridgitity of the frame .
If I wanted that , I 'de better weld 4 strips together to make a "box" .

Pat

Forgot to mention , the sides of the frame will be milled to obtain a true surface and to remove the tabs .

The general dimensions are a bit larger then A4 or letter sized paper .

Goal is...

I found this great little frame in cast aluminium .
I think , a very good base to build a desktop cnc router .

I'll be using 16mm supported rails and C style lineair bearings , 1605 balnuts and...

Yes , exactly what I was thinking .
Thx for the reply


Any idea why 60/300 would be used ?


And here's a picture of the motor and the wantai driver .
50$ on ebay with free shipping . ...

I've got this nice 24 Volt brushless motor , wich I'de like to use
to power a spindle .

ECM 48x20 Electronic Commutated Brushless DC Servo Motor
DC Brushless Motor
Features
4-pole rotor...

Nice job !

Care to elaborate how you're gonna regrind the spindle internal taper ?

Pat

Folks , if anyone has a driver board fried or not , working or not with or without modifiactions they'de care to get rid of . Drop me a private meassage , I 'm interested in buying one .

I'de...

Yes I did .

I've tried various steppers from my salvaged steppers drawer .
Some performed a little better , but all in all results were still poor .
I tried 4 and 8 wire steppers , various...

The first tests .

The machine works allright .
I can jog with mach3 , all axis move smoothly .
Some preliminary tests with a dial indicator show a promising repeatability .

There's a...

BTW guy's , does anyone know how to get the spindle relais working ?

Must be some setting in mach I'm overlooking but I can't get the relais to respond .
If I manually ground the corresponding...

Here's what causes the lost or missed steps :
Pretty obvious once you can see it on a scope :

Image stepdir3 :
The step signal is shown as the upper trace .
This is the step signal with...

Did you ever try this without inverting the polarity in mach3 but
flip one stepper winding instead to change direction of the motors ?

I think that ought to clear the error to , with the opto...